LTwiki-Wiki for LTspice - User contributions [en]

Main Page

2009-08-31T03:21:15Z

68.202.0.100:

<big>'''Welcome to LT Wiki!'''</big>

Please use this wiki for helpful topics related to [http://ltspice.linear.com/software/LTspiceIV.exe LTspice].  For complete information about LTspice, please join the [http://tech.groups.yahoo.com/group/LTspice/ Yahoo Group] (registration is free).  They are a great user group with a vast amount of helpful files and useful tips.  Neither this site nor the LTspice Yahoo Group has any affiliation with the [http://www.linear.com/ ''Linear Technology Corporation''].

[[Most frequently asked questions for beginners]]

[[Adding a permanent component to LTspice]]

[[B sources (complete reference)]] 
[[B sources (common examples)]]

[[Components Library]] 
[[Control Panel]] 
[[Convergence problems?]]

[[LTspice Hot Keys]]

[[Simulation Command]]

[[SPICE and LTspice Courseware and Tutorials]] 
[[SPICE Model Links]] 
[[SPICE Application Notes and White Papers]]

[[Transformers]]

SPICE and LTspice Courseware and Tutorials

2009-08-29T01:00:57Z

68.202.0.100: /* College Courses */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.uta.edu/ee/hw/pspice/index.php PSPICE Tutorials] 
[http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/ SPICE 3 User's Manual from University of Exeter] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview] 

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://members.aon.at/fschmid7/page_2_1.html Nonlinear Load-Flow Computation with SPICE] LTspice files included 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://ecee.colorado.edu/~ecen4827/spice.html Analog IC Design ECEN4827/5827 0.35um Univ. of Colorado] LTspice examples included 
[http://cmosedu.com/cmos2/book2.htm CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE Application Notes and White Papers

2009-08-26T05:59:38Z

68.202.0.100:

[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes]

[http://en.wikipedia.org/wiki/Leakage_inductance Leakage Inductance from Wikipedia] 

[http://alternateenergies.com/LTwiki/files/microsim_appnts.pdf Microsim Application Notes (over 300 pages of SPICE modeling information)]

[http://www.allaboutcircuits.com/vol_3/chpt_3/14.html SPICE modeling for diodes from allaboutcircuits.com]

== Power Electronics ==

[http://alternateenergies.com/LTwiki/files/impedance-electrolytic_white_paper.pdf Improved Spice Models of Aluminum Electrolytic Capacitors for Inverter Applications]

[http://www2.electronicproducts.com/Simulate_adaptive_switching_regulators_using_PSpice-Article-facn_texas_aug2009.html.aspx Simulate adaptive switching regulators using PSpice]

[http://www.national.com/an/AN/AN-1484.pdf Designing a (Single Ended Primary Inductance Converter) SEPIC Converter]

SPICE Model Links

2009-08-24T21:09:29Z

68.202.0.100:

Begin by Googling 'part name' "SPICE model", usually it's enough.

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 
[http://www.macs.ece.mcgill.ca/~rfic/EC2/SPICE_MODEL_LIB.htm Opamp, Voltage Comparator, Voltage Regulator, Voltage Reference Models] Use caution, may be a copyright violation. 

== Utilities ==
[http://www.intusoft.com/utilities.htm#Modeling IBIS to SPICE utility] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.diodes.com/products/spicemodels/index.php Diodes.com] 
[http://www.irf.com/indexsw.html International Rectifier] 
[http://www.littelfuse.com/thyristor-spice-models.html Littelfuse Thyristor SPICE Models] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

Components Library and Circuits

2009-08-24T10:08:53Z

68.202.0.100: /* Compilation */

''For all of these components, place the subcircuit and the component in their respective folders, then restart LTspice. The component will then show up as a menu selection.''

== Compilation ==

[http://alternateenergies.com/LTwiki/files/LtSpicePlus_10_08.exe LTspicePlus_10_08.exe] 
Roberto Hugo Rodríguez Zubieta in 2005 created this executable, that provides a large number of extra components. First, backup your existing /lib/cmp directory at a minimum, and you may find it easy to just zip your entire /lib directory down. This executable will overwrite /Lib/Cmp with many more components that is based a ''dated'' version of the LTspice originals. The existing files are put into a folder /Lib/Cmp/Original. The dated version is not a problem. From LTspice, under 'Tools', selecting 'Sync Release' will restore all of the new models in the latest libs from LTspice. (At least every one I could see, using a Diff program.) Plus now you have many more.

The rest includes more than 90 files in the format *. sub, to denote that they contain subcircuits of devices or *. lib, for the files that contain families of components. This information is added to the folder /sub and it doesn't overwrite any original data. To the folder /sym is added several subfolders with files corresponding to more than 400 symbols.

In the folder \examples\LtSpicePlus, there are more of 600 clever examples to be run, these are mainly in format *. asc, although there are also some few ones in format *. cir; plus in this collection there are also near 100 symbols in format *. asy.

The install is in Spanish! The product result is in English. If you come across some 'Replace' options, etc, be prepared to Google some Spanish words to make sure you know what you are selecting. It's a 3.5MEG download.

If you don't speak Spanish, try those instructions:

* say "Aceptar" (Accept).
* Point the "Carpeta de Destino" (Destiny Folder) parameter at your LTSpice install-folder, normally it is C:\Program Files\LTC\LTSpice IV, but it will vary (e.g. in a Portuguese version of Windows it will be 'C:\Arquivos de Programas'...).
* If it complains about "Los siguinentes ficheros ya existen" (The following files already exist), choose what you consider to be most adequate: Sí/No (Yes/No), "Sí a todo/No a todo" (Yes to replace all/Replace nothing at all) or "Renombrar" (Rename). It's your choice, I'd say "yes" after checking if filesizes are similar (i.e. a library you already have).
* The extraction will run, it takes a while (lots of files). If finishes correctly and doesn't give any error, probably all went well, try some examples just to be sure.

Roberto has Spanish documentation and tutorials using LTspice at [https://sites.google.com/site/precisionaudiotv/Home Precisión, guía para desarrollos con Ltspice.]

Someone wants to build an updated version of this? Contact Roberto: precisionorte -at- gmail.com and he can help get you started.

== Comparators ==

'''LM339'''

[[File:LM339.sub]] LM339 subcircuit. Place in \lib\sub 
[[File:LM339.asy]] LM339 component. Place in \lib\sym\Comparators 
[[File:LM339 test.asc]] Test circuit using the native LM339. You may want to use the alternate solver. 
[http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339.shtml Datasheet]

== NMOS ==

'''2N7002'''

[[File:2N7002.sub]] 2N7002 subcircuit. Place in \lib\sub 
[[File:2N7002.asy]] 2N7002 component. Place in \lib\sym\nmos 
[[File:2N7002_test.asc]] Test circuit using the native 2N7002 You may want to use the alternate solver 
[http://www.fairchildsemi.com/ds/2N/2N7000.pdf Datasheet]

'''IRFB4110pbf'''

[http://www.irf.com/product-info/models/spice/irfb4110pbf.spi IRFB4110 subcircuit] Place in \lib\sub 
[[File:IRFB4110pbf.asy]] IRFB4110 component. Place in \lib\sym\nmos 
[[File:Irfb4110 test.asc]] Test circuit using the native IRFB4110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irfb4110pbf.pdf Datasheet]

'''IRLR3110'''

[http://www.irf.com/product-info/models/spice/irlr_u3110zpbf.spi IRLR3110 subcircuit] Place in \lib\sub 
[[File:IRLR3110.asy]] IRLR3110 component. Place in \lib\sym\nmos 
[[File:Irlr3110 test.asc]] Test circuit using the native IRLR3110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irlr3110zpbf.pdf Datasheet]

== Opamps ==

'''LM324 - National Semiconductor'''

[http://www.national.com/models/spice/LM/LM324.MOD LM324 subcircuit] Place in \lib\sub 
[[File:LM324-national.asy]] LM324/NS component. Place in \lib\sym\Opamps 
[[File:LM324-national_test.asc‎]] Test circuit using the native LM324. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM124.pdf Datasheet]

'''LM6132A - National Semiconductor'''

[[File:LM6132A.MOD]] LM6132A subcircuit. Place in \lib\sub 
[[File:LM6132A-national.asy]] LM6132A/NS component. Place in \lib\sym\Opamps 
[[File:LM6132A test.asc]] Test circuit using the native LM6132A. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM6132.pdf Datasheet]

'''THS4131'''

[http://www.ti.com/litv/zip/sloj149 THS4131 subcircuit] Extract ths4131.txt & place in \lib\sub 
[[File:THS4131.asy]] THS4131 component. Place in \lib\sym\Opamps 
[[File:THS4131 test1.asc]] THS4131 test circuit, using native THS4131 
[http://www.ti.com/lit/gpn/ths4131 Datasheet] Original files created by Helmut Sennewald at [http://tech.groups.yahoo.com/group/LTspice/].

'''TL072'''

[[File:TL072.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL072.asy]] TL072 component. Place in \lib\sym\Opamps 
[[File:Pweoverdrivepreamp2.asc]] Overdrive Preamp circuit, using native TL072 
[http://www.datasheetcatalog.com/datasheets_pdf/T/L/0/7/TL072.shtml Datasheet] Original files adapted from [http://tech.groups.yahoo.com/group/LTspice/].

== Voltage Regulators ==

'''TL431'''

[[File:TL431.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL431.asy]] TL072 component. Place in \lib\sym\Voltage Regulators 
[[File:TL431_test.asc]] Test circuit using the native TL431 
[http://www.fairchildsemi.com/ds/TL%2FTL431.pdf Datasheet]

SPICE and LTspice Courseware and Tutorials

2009-08-22T03:51:41Z

68.202.0.100: /* Getting Started */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.uta.edu/ee/hw/pspice/index.php PSPICE Tutorials] 
[http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/ SPICE 3 User's Manual from University of Exeter] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview] 

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://members.aon.at/fschmid7/page_2_1.html Nonlinear Load-Flow Computation with SPICE] LTspice files included 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-22T03:41:05Z

68.202.0.100: /* Getting Started */

== Getting Started ==
[http://www.see.ed.ac.uk/~dar/ee4-vlsi/L1-intro.html HSPICE Tutorial] 
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/ SPICE 3 User's Manual from University of Exeter] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview] 

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://members.aon.at/fschmid7/page_2_1.html Nonlinear Load-Flow Computation with SPICE] LTspice files included 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-22T03:36:10Z

68.202.0.100: /* Getting Started */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://newton.ex.ac.uk/teaching/CDHW/Electronics2/userguide/ SPICE 3 User's Manual from University of Exeter] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview] 

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://members.aon.at/fschmid7/page_2_1.html Nonlinear Load-Flow Computation with SPICE] LTspice files included 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

Components Library and Circuits

2009-08-22T03:19:40Z

68.202.0.100: /* Compilation */

''For all of these components, place the subcircuit and the component in their respective folders, then restart LTspice. The component will then show up as a menu selection.''

== Compilation ==

[http://alternateenergies.com/LTwiki/files/LtSpicePlus_10_08.exe LTspicePlus_10_08.exe] 
Roberto Hugo Rodríguez Zubieta in 2005 created this executable, that provides a large number of extra components. First, backup your existing /lib/cmp directory at a minimum, and you may find it easy to just zip your entire /lib directory down. This executable will overwrite /Lib/Cmp with many more components that is based a ''dated'' version of the LTspice originals. The existing files are put into a folder /Lib/Cmp/Original. The dated version is not a problem. From LTspice, under 'Tools', selecting 'Sync Release' will restore all of the new models in the latest libs from LTspice. (At least every one I could see, using a Diff program.) Plus now you have many more.

The rest includes more than 90 files in the format *. sub, to denote that they contain subcircuits of devices or *. lib, for the files that contain families of components. This information is added to the folder /sub and it doesn't overwrite any original data. To the folder /sym is added several subfolders with files corresponding to more than 400 symbols.

In the folder \examples\LtSpicePlus, there are more of 600 clever examples to be run, these are mainly in format *. asc, although there are also some few ones in format *. cir; plus in this collection there are also near 100 symbols in format *. asy.

The install is in Spanish! The product result is in English. If you come across some 'Replace' options, etc, be prepared to Google some Spanish words to make sure you know what you are selecting. It's a 3.5MEG download.

If you don't speak Spanish, try those instructions:

* say "Aceptar" (Accept).
* Point the "Carpeta de Destino" (Destiny Folder) parameter at your LTSpice install-folder, normally it is C:\Program Files\LTC\LTSpice IV, but it will vary (e.g. in a Portuguese version of Windows it will be 'C:\Arquivos de Programas'...).
* If it complains about "Los siguinentes ficheros ya existen" (The following files already exist), choose what you consider to be most adequate: Sí/No (Yes/No), "Sí a todo/No a todo" (Yes to replace all/Replace nothing at all) or "Renombrar" (Rename). It's your choice, I'd say "yes" after checking if filesizes are similar (i.e. a library you already have).
* The extraction will run, it takes a while (lots of files). If finishes correctly and doesn't give any error, probably all went well, try some examples just to be sure.

Roberto has Spanish documentation and tutorials using LTspice at [https://sites.google.com/site/precisionaudiotv/Home Precisión, guía para desarrollos con Ltspice.]

== Comparators ==

'''LM339'''

[[File:LM339.sub]] LM339 subcircuit. Place in \lib\sub 
[[File:LM339.asy]] LM339 component. Place in \lib\sym\Comparators 
[[File:LM339 test.asc]] Test circuit using the native LM339. You may want to use the alternate solver. 
[http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339.shtml Datasheet]

== NMOS ==

'''2N7002'''

[[File:2N7002.sub]] 2N7002 subcircuit. Place in \lib\sub 
[[File:2N7002.asy]] 2N7002 component. Place in \lib\sym\nmos 
[[File:2N7002_test.asc]] Test circuit using the native 2N7002 You may want to use the alternate solver 
[http://www.fairchildsemi.com/ds/2N/2N7000.pdf Datasheet]

'''IRFB4110pbf'''

[http://www.irf.com/product-info/models/spice/irfb4110pbf.spi IRFB4110 subcircuit] Place in \lib\sub 
[[File:IRFB4110pbf.asy]] IRFB4110 component. Place in \lib\sym\nmos 
[[File:Irfb4110 test.asc]] Test circuit using the native IRFB4110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irfb4110pbf.pdf Datasheet]

'''IRLR3110'''

[http://www.irf.com/product-info/models/spice/irlr_u3110zpbf.spi IRLR3110 subcircuit] Place in \lib\sub 
[[File:IRLR3110.asy]] IRLR3110 component. Place in \lib\sym\nmos 
[[File:Irlr3110 test.asc]] Test circuit using the native IRLR3110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irlr3110zpbf.pdf Datasheet]

== Opamps ==

'''LM324 - National Semiconductor'''

[http://www.national.com/models/spice/LM/LM324.MOD LM324 subcircuit] Place in \lib\sub 
[[File:LM324-national.asy]] LM324/NS component. Place in \lib\sym\Opamps 
[[File:LM324-national_test.asc‎]] Test circuit using the native LM324. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM124.pdf Datasheet]

'''LM6132A - National Semiconductor'''

[[File:LM6132A.MOD]] LM6132A subcircuit. Place in \lib\sub 
[[File:LM6132A-national.asy]] LM6132A/NS component. Place in \lib\sym\Opamps 
[[File:LM6132A test.asc]] Test circuit using the native LM6132A. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM6132.pdf Datasheet]

'''THS4131'''

[http://www.ti.com/litv/zip/sloj149 THS4131 subcircuit] Extract ths4131.txt & place in \lib\sub 
[[File:THS4131.asy]] THS4131 component. Place in \lib\sym\Opamps 
[[File:THS4131 test1.asc]] THS4131 test circuit, using native THS4131 
[http://www.ti.com/lit/gpn/ths4131 Datasheet] Original files created by Helmut Sennewald at [http://tech.groups.yahoo.com/group/LTspice/].

'''TL072'''

[[File:TL072.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL072.asy]] TL072 component. Place in \lib\sym\Opamps 
[[File:Pweoverdrivepreamp2.asc]] Overdrive Preamp circuit, using native TL072 
[http://www.datasheetcatalog.com/datasheets_pdf/T/L/0/7/TL072.shtml Datasheet] Original files adapted from [http://tech.groups.yahoo.com/group/LTspice/].

== Voltage Regulators ==

'''TL431'''

[[File:TL431.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL431.asy]] TL072 component. Place in \lib\sym\Voltage Regulators 
[[File:TL431_test.asc]] Test circuit using the native TL431 
[http://www.fairchildsemi.com/ds/TL%2FTL431.pdf Datasheet]

Components Library and Circuits

2009-08-21T06:10:16Z

68.202.0.100: /* Compilation */

''For all of these components, place the subcircuit and the component in their respective folders, then restart LTspice. The component will then show up as a menu selection.''

== Compilation ==

[http://alternateenergies.com/LTwiki/files/LtSpicePlus_10_08.exe LTspicePlus_10_08.exe] 
Roberto Hugo Rodríguez Zubieta in 2005 created this executable, that provides a large number of extra components. First, backup your existing /lib/cmp directory at a minimum, and you may find it easy to just zip your entire /lib directory down. This executable will overwrite /Lib/Cmp with many more components that is based a ''dated'' version of the LTspice originals. The existing files are put into a folder /Lib/Cmp/Original. Not to worry! From LTspice, under 'Tools', selecting 'Sync Release' will restore all of the new models in the latest libs from LTspice. (At least every one I could see, using a Diff program.) Plus now you have many more.

The rest includes more than 90 files in the format *. sub, to denote that they contain subcircuits of devices or *. lib, for the files that contain families of components. This information is added to the folder /sub and it doesn't overwrite any original data. To the folder /sym is added several subfolders with files corresponding to more than 400 symbols.

In the folder \examples\LtSpicePlus, there are more of 600 clever examples to be run, these are mainly in format *. asc, although there are also some few ones in format *. cir; plus in this collection there are also near 100 symbols in format *. asy.

The install is in Spanish! The product result is in English. If you come across some 'Replace' options, etc, be prepared to Google some Spanish words to make sure you know what you are selecting. Finally I got some good out of my college Spanish! It's a 3.5MEG download.

Roberto has Spanish documentation and tutorials using LTspice at [https://sites.google.com/site/precisionaudiotv/Home Precisión, guía para desarrollos con Ltspice.]

== Comparators ==

'''LM339'''

[[File:LM339.sub]] LM339 subcircuit. Place in \lib\sub 
[[File:LM339.asy]] LM339 component. Place in \lib\sym\Comparators 
[[File:LM339 test.asc]] Test circuit using the native LM339. You may want to use the alternate solver. 
[http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339.shtml Datasheet]

== NMOS ==

'''2N7002'''

[[File:2N7002.sub]] 2N7002 subcircuit. Place in \lib\sub 
[[File:2N7002.asy]] 2N7002 component. Place in \lib\sym\nmos 
[[File:2N7002_test.asc]] Test circuit using the native 2N7002 You may want to use the alternate solver 
[http://www.fairchildsemi.com/ds/2N/2N7000.pdf Datasheet]

'''IRFB4110pbf'''

[http://www.irf.com/product-info/models/spice/irfb4110pbf.spi IRFB4110 subcircuit] Place in \lib\sub 
[[File:IRFB4110pbf.asy]] IRFB4110 component. Place in \lib\sym\nmos 
[[File:Irfb4110 test.asc]] Test circuit using the native IRFB4110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irfb4110pbf.pdf Datasheet]

'''IRLR3110'''

[http://www.irf.com/product-info/models/spice/irlr_u3110zpbf.spi IRLR3110 subcircuit] Place in \lib\sub 
[[File:IRLR3110.asy]] IRLR3110 component. Place in \lib\sym\nmos 
[[File:Irlr3110 test.asc]] Test circuit using the native IRLR3110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irlr3110zpbf.pdf Datasheet]

== Opamps ==

'''LM324 - National Semiconductor'''

[http://www.national.com/models/spice/LM/LM324.MOD LM324 subcircuit] Place in \lib\sub 
[[File:LM324-national.asy]] LM324/NS component. Place in \lib\sym\Opamps 
[[File:LM324-national_test.asc‎]] Test circuit using the native LM324. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM124.pdf Datasheet]

'''LM6132A - National Semiconductor'''

[[File:LM6132A.MOD]] LM6132A subcircuit. Place in \lib\sub 
[[File:LM6132A-national.asy]] LM6132A/NS component. Place in \lib\sym\Opamps 
[[File:LM6132A test.asc]] Test circuit using the native LM6132A. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM6132.pdf Datasheet]

'''THS4131'''

[http://www.ti.com/litv/zip/sloj149 THS4131 subcircuit] Extract ths4131.txt & place in \lib\sub 
[[File:THS4131.asy]] THS4131 component. Place in \lib\sym\Opamps 
[[File:THS4131 test1.asc]] THS4131 test circuit, using native THS4131 
[http://www.ti.com/lit/gpn/ths4131 Datasheet] Original files created by Helmut Sennewald at [http://tech.groups.yahoo.com/group/LTspice/].

'''TL072'''

[[File:TL072.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL072.asy]] TL072 component. Place in \lib\sym\Opamps 
[[File:Pweoverdrivepreamp2.asc]] Overdrive Preamp circuit, using native TL072 
[http://www.datasheetcatalog.com/datasheets_pdf/T/L/0/7/TL072.shtml Datasheet] Original files adapted from [http://tech.groups.yahoo.com/group/LTspice/].

== Voltage Regulators ==

'''TL431'''

[[File:TL431.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL431.asy]] TL072 component. Place in \lib\sym\Voltage Regulators 
[[File:TL431_test.asc]] Test circuit using the native TL431 
[http://www.fairchildsemi.com/ds/TL%2FTL431.pdf Datasheet]

LTwiki-Wiki for LTspice:Current events

2009-08-21T06:03:02Z

68.202.0.100: Created page with '[http://www.nuhorizons.com/xpresstrack/ltcswitcher/ FREE half-day seminar designed to educate and inform both advanced and new users of LTspice] Register now, running from Augus…'

[http://www.nuhorizons.com/xpresstrack/ltcswitcher/ FREE half-day seminar designed to educate and inform both advanced and new users of LTspice] Register now, running from August to November 2009.

SPICE Model Links

2009-08-20T05:28:11Z

68.202.0.100:

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 
[http://www.macs.ece.mcgill.ca/~rfic/EC2/SPICE_MODEL_LIB.htm Opamp, Voltage Comparator, Voltage Regulator, Voltage Reference Models] Use caution, may be a copyright violation. 

== Utilities ==
[http://www.intusoft.com/utilities.htm#Modeling IBIS to SPICE utility] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.diodes.com/products/spicemodels/index.php Diodes.com] 
[http://www.irf.com/indexsw.html International Rectifier] 
[http://www.littelfuse.com/thyristor-spice-models.html Littelfuse Thyristor SPICE Models] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

Components Library and Circuits

2009-08-20T03:11:24Z

68.202.0.100:

''For all of these components, place the subcircuit and the component in their respective folders, then restart LTspice. The component will then show up as a menu selection.''

== Compilation ==

[http://alternateenergies.com/LTwiki/files/LtSpicePlus_10_08.exe LTspicePlus_10_08.exe] 
Roberto Hugo Rodríguez Zubieta in 2005 created this executable, that provides a large number of extra components. First, backup your existing /lib/cmp directory at a minimum, and you may find it easy to just zip your entire /lib directory down. This executable will overwrite /Lib/Cmp with many more components that is based a ''dated'' version of the LTspice originals. The existing files are put into a folder /Lib/Cmp/Original. Not to worry! From LTspice, under 'Tools', selecting 'Sync Release' will restore all of the new models in the latest libs from LTspice. (At least every one I could see, using a Diff program.) Plus now you have many more.

The rest includes more than 90 files in the format *. sub, to denote that they contain subcircuits of devices or *. lib, for the files that contain families of components. This information is added to the folder /sub and it doesn't overwrite any original data. To the folder /sym is added several subfolders with files corresponding to more than 400 symbols.

In the folder \examples\LtSpicePlus, there are more of 600 clever examples to be run, these are mainly in format *. asc, although there are also some few ones in format *. cir; plus in this collection there are also near 100 symbols in format *. asy.

The install is in Spanish! The product result is in English. If you come across some 'Replace' options, etc, be prepared to Google some Spanish words to make sure you know what you are selecting. Finally I got some good out of my college Spanish! It's a 3.5MEG download.

== Comparators ==

'''LM339'''

[[File:LM339.sub]] LM339 subcircuit. Place in \lib\sub 
[[File:LM339.asy]] LM339 component. Place in \lib\sym\Comparators 
[[File:LM339 test.asc]] Test circuit using the native LM339. You may want to use the alternate solver. 
[http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339.shtml Datasheet]

== NMOS ==

'''2N7002'''

[[File:2N7002.sub]] 2N7002 subcircuit. Place in \lib\sub 
[[File:2N7002.asy]] 2N7002 component. Place in \lib\sym\nmos 
[[File:2N7002_test.asc]] Test circuit using the native 2N7002 You may want to use the alternate solver 
[http://www.fairchildsemi.com/ds/2N/2N7000.pdf Datasheet]

'''IRFB4110pbf'''

[http://www.irf.com/product-info/models/spice/irfb4110pbf.spi IRFB4110 subcircuit] Place in \lib\sub 
[[File:IRFB4110pbf.asy]] IRFB4110 component. Place in \lib\sym\nmos 
[[File:Irfb4110 test.asc]] Test circuit using the native IRFB4110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irfb4110pbf.pdf Datasheet]

'''IRLR3110'''

[http://www.irf.com/product-info/models/spice/irlr_u3110zpbf.spi IRLR3110 subcircuit] Place in \lib\sub 
[[File:IRLR3110.asy]] IRLR3110 component. Place in \lib\sym\nmos 
[[File:Irlr3110 test.asc]] Test circuit using the native IRLR3110. You may want to use the alternate solver. 
[http://www.irf.com/product-info/datasheets/data/irlr3110zpbf.pdf Datasheet]

== Opamps ==

'''LM324 - National Semiconductor'''

[http://www.national.com/models/spice/LM/LM324.MOD LM324 subcircuit] Place in \lib\sub 
[[File:LM324-national.asy]] LM324/NS component. Place in \lib\sym\Opamps 
[[File:LM324-national_test.asc‎]] Test circuit using the native LM324. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM124.pdf Datasheet]

'''LM6132A - National Semiconductor'''

[[File:LM6132A.MOD]] LM6132A subcircuit. Place in \lib\sub 
[[File:LM6132A-national.asy]] LM6132A/NS component. Place in \lib\sym\Opamps 
[[File:LM6132A test.asc]] Test circuit using the native LM6132A. You may want to use the alternate solver. 
[http://www.national.com/ds/LM/LM6132.pdf Datasheet]

'''THS4131'''

[http://www.ti.com/litv/zip/sloj149 THS4131 subcircuit] Extract ths4131.txt & place in \lib\sub 
[[File:THS4131.asy]] THS4131 component. Place in \lib\sym\Opamps 
[[File:THS4131 test1.asc]] THS4131 test circuit, using native THS4131 
[http://www.ti.com/lit/gpn/ths4131 Datasheet] Original files created by Helmut Sennewald at [http://tech.groups.yahoo.com/group/LTspice/].

'''TL072'''

[[File:TL072.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL072.asy]] TL072 component. Place in \lib\sym\Opamps 
[[File:Pweoverdrivepreamp2.asc]] Overdrive Preamp circuit, using native TL072 
[http://www.datasheetcatalog.com/datasheets_pdf/T/L/0/7/TL072.shtml Datasheet] Original files adapted from [http://tech.groups.yahoo.com/group/LTspice/].

== Voltage Regulators ==

'''TL431'''

[[File:TL431.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL431.asy]] TL072 component. Place in \lib\sym\Voltage Regulators 
[[File:TL431_test.asc]] Test circuit using the native TL431 
[http://www.fairchildsemi.com/ds/TL%2FTL431.pdf Datasheet]

SPICE Model Links

2009-08-19T23:53:07Z

68.202.0.100:

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 
[http://www.macs.ece.mcgill.ca/~rfic/EC2/SPICE_MODEL_LIB.htm Opamp, Voltage Comparator, Voltage Regulator, Voltage Reference Models] Use caution, may be a copyright violation. 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.diodes.com/products/spicemodels/index.php Diodes.com] 
[http://www.irf.com/indexsw.html International Rectifier] 
[http://www.littelfuse.com/thyristor-spice-models.html Littelfuse Thyristor SPICE Models] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

Most frequently asked questions for beginners

2009-08-19T05:24:28Z

68.202.0.100:

'''Q:''' What are the different LTspice file types?

Schematic: name.asc the drawing with your circuit (a text file)
Symbol: name.asy symbols for the schematic (a text file)
Netlist: name.net unprocessed netlist (text file viewable from within LTspice
& usable by other SPICE engines)
Logfile: name.log info and results from .four, .measure, .op (text file viewable
from within LTspice); may also contain the fully processed
and expanded netlist (a [[Control Panel]] setting)
Result: name.raw binary output data file (text format may be optionally specified)
Result: name.fft binary result of an FFT
Plot settings: name.plt text file used to save and restore Waveform Viewer plot settings
Model file: abc.xyz text file containing model(s) - may be any valid file name
Circuit file: name.cir frequently used extension for an external netlist input file (text)

'''Q:''' How do you copy and paste between schematics?

'''A:''' Click the '''Copy Icon''' in the tool bar or select '''Copy''' from the '''Edit''' drop down menu (or type '''ctrl-C''').  Select (with the mouse) what you want to copy.  Make the target schematic active (click on it or its tab or type '''ctrl-Tab''') and then click the '''Paste Icon''' in the tool bar or select '''Paste''' from the '''Edit''' drop down menu (or type '''ctrl-V''').

'''Q:''' How do I copy and paste between symbols in the symbol editor?

'''A:''' It is not possible to use copy and paste in the symbol editor.  Symbol files are ascii text.  Merge the text as described in [http://tech.groups.yahoo.com/group/LTspice/message/7201?threaded=1&l=1 message 7201] in the LTspice Yahoo Group.

'''Q:''' How can I add intrinsic device models (BJTs, FETs, etc.) to LTspice?

'''A:''' Please take a look to the many examples in the files section of the LTspice Yahoo Group ([http://tech.groups.yahoo.com/group/LTspice/files/%20Lib/ Files => Lib]).

'''Q:''' How can I add subcircuits to LTspice?

'''A:''' You will find many answers when you search the LTspice Yahoo Group messages for words like "library", "symbol" or "FAQ".

Please read first the programs help:
Help -> Schematic Capture -> Editing Components -> Creating New Symbols
Help -> Help Topics ->FAQs -> Third party models
Help -> Help Topics ->FAQs -> Mosfet

You will find also help in the linked documents from our LTspice Yahoo Group.

Links
Links -> Spice Courseware And Tutorials

There is another document about symbols and models in our Files section.

Files -> Tut -> Symbol Types For Subcircuits

'''Q:''' I have a pulse source in my schematic with zero transition times.  LTspice only shows slow transition times of 2ns.  What's going on here?
PULSE(0 5 0 0 0 20n 100n)

'''A:''' LTspice automatically will use a default value for <trise> and <tfall> if these parameters are set to zero.  Default value: 10% of Ton or 10% of Tperiod-Ton whatever is smaller.  You must specify Trise and Tfall if you want a certain value.
PULSE(0 5 0 100p 100p 20n 100n)
Don't use steeper transitions than required by your application.

'''Q:''' I have used a pure sine source in my schematic, but the output signal of my circuit looks slightly different from cycle to cycle.

'''A:''' LTspice has waveform compression enabled as the default setting.  This compression reduces the amount of saved data during the simulation.  It's a lossy compression and thus it can distort the saved signals.  You can switch it off with the following command line in your schematic.
.options plotwinsize=0
It could be switched off in the "Control Panel -> Compression" pane as well, but this setting will be lost upon closing the current session of LTspice.

SPICE Model Links

2009-08-19T02:27:23Z

68.202.0.100: /* Manufacturer sites */

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.diodes.com/products/spicemodels/index.php Diodes.com] 
[http://www.irf.com/indexsw.html International Rectifier] 
[http://www.littelfuse.com/thyristor-spice-models.html Littelfuse Thyristor SPICE Models] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

SPICE Application Notes and White Papers

2009-08-19T00:34:48Z

68.202.0.100:

[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes]

[http://alternateenergies.com/LTwiki/files/microsim_appnts.pdf Microsim Application Notes (over 300 pages of SPICE modeling information)]

[http://www.allaboutcircuits.com/vol_3/chpt_3/14.html SPICE modeling for diodes from allaboutcircuits.com]

== Power Electronics ==

[http://alternateenergies.com/LTwiki/files/impedance-electrolytic_white_paper.pdf Improved Spice Models of Aluminum Electrolytic Capacitors for Inverter Applications]

[http://www2.electronicproducts.com/Simulate_adaptive_switching_regulators_using_PSpice-Article-facn_texas_aug2009.html.aspx Simulate adaptive switching regulators using PSpice]

[http://www.national.com/an/AN/AN-1484.pdf Designing a (Single Ended Primary Inductance Converter) SEPIC Converter]

Main Page

2009-08-18T21:09:37Z

68.202.0.100:

<big>'''Welcome to LT Wiki!'''</big>

Please use this wiki to create helpful topics related to LTspice.  For complete information about LTspice, please join the [http://tech.groups.yahoo.com/group/LTspice/ Yahoo Group] (registration is free).  They are a great user group with a vast amount of helpful files and useful tips.  Neither this site nor the LTspice Yahoo Group has any affiliation with the ''Linear Technology Corporation''.

[[Most frequently asked questions for beginners]]

[[Adding a permanent component to LTspice]]

[[B sources (complete reference)]] 
[[B sources (common examples)]]

[[Components Library]] 
[[Control Panel]] 
[[Convergence problems?]]

[[LTspice Hot Keys]]

[[Simulation Command]]

[[SPICE and LTspice Courseware and Tutorials]] 
[[SPICE Model Links]] 
[[SPICE Application Notes and White Papers]]

[[Transformers]]

SPICE and LTspice Courseware and Tutorials

2009-08-18T03:39:04Z

68.202.0.100: /* Intermediate */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://members.aon.at/fschmid7/page_2_1.html Nonlinear Load-Flow Computation with SPICE] LTspice files included 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-18T00:46:32Z

68.202.0.100: /* Intermediate */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://www.analog-innovations.com/HSpice2PSpiceNewEdit.pdf Convert HSpice CMOS Library Files to PSpice CMOS Library Files - Manually] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-17T04:43:56Z

68.202.0.100: /* Getting Started */

== Getting Started ==
[http://wapedia.mobi/en/SPICE?t=3. Introduction to SPICE] 
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-17T02:34:51Z

68.202.0.100: /* Getting Started */

== Getting Started ==
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://pkropik.com/storage/1202227692_sb_switchercad_1.pdf Introduction to SwitcherCAD] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-16T20:23:34Z

68.202.0.100:

== Getting Started ==
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://chriscrossx.blogspot.com/2008/01/lt-spice-modelling-parametrics-steps.html Modeling, Parametrics, Stepping and More] 
[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-16T19:32:32Z

68.202.0.100:

== Getting Started ==
[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear] 
[http://www.ece101.com/2009/01/an-introduction-to-ltspice/ Intro to LTspice with a video] 
[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials] 
[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

== Intermediate ==

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics] 
[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models] 
[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice] 
[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB] 
[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity] 
[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear] 
[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual] 

== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE Application Notes and White Papers

2009-08-16T04:50:33Z

68.202.0.100:

[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes]

[http://alternateenergies.com/LTwiki/files/microsim_appnts.pdf Microsim Application Notes (over 300 pages of SPICE modeling information)]

== Power Electronics ==

[http://alternateenergies.com/LTwiki/files/impedance-electrolytic_white_paper.pdf Improved Spice Models of Aluminum Electrolytic Capacitors for Inverter Applications]

[http://www2.electronicproducts.com/Simulate_adaptive_switching_regulators_using_PSpice-Article-facn_texas_aug2009.html.aspx Simulate adaptive switching regulators using PSpice]

[http://www.national.com/an/AN/AN-1484.pdf Designing a (Single Ended Primary Inductance Converter) SEPIC Converter]

SPICE Model Links

2009-08-15T23:33:14Z

68.202.0.100: /* Manufacturer sites */

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.diodes.com/products/spicemodels/index.php Diodes.com] 
[http://www.irf.com/indexsw.html International Rectifier] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

SPICE and LTspice Courseware and Tutorials

2009-08-14T19:55:06Z

68.202.0.100:

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics]

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models]

[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice]

[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB]

[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear]

[http://www.electronics-lab.com/downloads/schematic/013/tutorial/PSPCREF.pdf OrCAD PSpice A/D Online Manual]
== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE Application Notes and White Papers

2009-08-14T17:33:44Z

68.202.0.100:

[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes]

[http://alternateenergies.com/LTwiki/files/microsim_appnts.pdf Microsim Application Notes (over 300 pages of SPICE modeling information)]

[http://alternateenergies.com/LTwiki/files/impedance-electrolytic_white_paper.pdf Improved Spice Models of Aluminum Electrolytic Capacitors for Inverter Applications]

[http://www2.electronicproducts.com/Simulate_adaptive_switching_regulators_using_PSpice-Article-facn_texas_aug2009.html.aspx Simulate adaptive switching regulators using PSpice]

SPICE and LTspice Courseware and Tutorials

2009-08-14T05:17:42Z

68.202.0.100:

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics]

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models]

[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice]

[http://home.comcast.net/~andy_c_public/ltspice_freepcb_1.htm Using LTspice as a Schematic Capture Tool for FreePCB]

[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear]
== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE Model Links

2009-08-14T03:50:18Z

68.202.0.100: /* Manufacturer sites */

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi] 
[http://www.irf.com/indexsw.html International Rectifier]

SPICE Model Links

2009-08-13T19:41:29Z

68.202.0.100:

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.emwonder.com/spicemodels/ Links to many companies' SPICE models from emwonder.com] 

== Manufacturer sites ==
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.onsemi.com/site/support/models/_vgn9192493513730.html ONsemi]

SPICE Model Links

2009-08-13T04:03:25Z

68.202.0.100:

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors] 
[http://www.emwonder.com/spicemodels/ Links to many companys' SPICE models from emwonder.com]

SPICE and LTspice Courseware and Tutorials

2009-08-13T01:18:25Z

68.202.0.100:

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics]

[http://jeff.tk:81/wiki/Trinary/LTspice Adding MOSFET models]

[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice]

[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://en.wikiversity.org/wiki/EE_Introduction_to_Electronics/Lecture_SPICE Setting up LTspice and using models from wikiversity]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear]
== College Courses ==

[http://cmosedu.com/cmos2/book2.htm College course on CMOS Mixed-Signal Design] Full course, lectures, problems - LTspice examples included

SPICE and LTspice Courseware and Tutorials

2009-08-12T19:39:12Z

68.202.0.100:

SPICE and LTspice Courseware and Tutorials

2009-08-12T19:34:07Z

68.202.0.100:

SPICE and LTspice Courseware and Tutorials

2009-08-12T19:28:49Z

68.202.0.100:

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics]

[http://electrostud.wikia.com/wiki/Using_WAVE_files_as_input/output_in_LTSpice Using WAVE files as input/output in LTspice]

[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear]

SPICE Application Notes and White Papers

2009-08-12T18:00:05Z

68.202.0.100: Created page with '[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes] [http://alternateenergies.com/LTwiki/files/microsim_a…'

Main Page

2009-08-12T17:59:25Z

68.202.0.100:

<big>'''Welcome to LT Wiki!'''</big>

Please use this wiki to create helpful topics related to LTspice. For complete information about LTspice, please join the Yahoo group at [http://tech.groups.yahoo.com/group/LTspice/]. They are a great user group with a vast amount of helpful files and useful tips. This site has no affiliation with Linear Technology.

[[Most frequently asked questions for beginners]]

[[Adding a permanent component to LTspice]]

[[B sources (complete reference)]] 
[[B sources (common examples)]]

[[Components Library]] 
[[Convergence problems?]]

[[LTspice Hot Keys]]

[[SPICE and LTspice Courseware and Tutorials]]

[[SPICE Model Links]]

[[SPICE Application Notes and White Papers]]

SPICE and LTspice Courseware and Tutorials

2009-08-12T17:55:02Z

68.202.0.100:

[http://gaussmarkov.net/wordpress/tools/software/ltspice/an-ltspice-tutorial/ Tutorial from guitar stompboxes and electronics]

[http://csserver.evansville.edu/~richardson/courses/Tutorials/LTspiceIV/ University of Evansville LTspice IV Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

[http://www.linear.com/designtools/software/LTspiceGettingStartedGuide.pdf LTspice Getting Started Guide from Linear]

SPICE Model Links

2009-08-12T17:46:39Z

68.202.0.100: /* SPICE Model Links */

[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors]

SPICE Model Links

2009-08-12T17:46:05Z

68.202.0.100: Created page with '== SPICE Model Links == [http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] [http://www.coilcraft.com/modelsswcad.cfm Coilcraft Induc…'

== SPICE Model Links ==
[http://www.elektronikschule.de/~krausg/Spice_Model_CD/ Large list from elektronikschule.de] 
[http://www.coilcraft.com/modelsswcad.cfm Coilcraft Inductors]

Main Page

2009-08-12T17:41:09Z

68.202.0.100:

Components Library and Circuits

2009-08-11T01:46:37Z

68.202.0.100:

''For all of these components, place the subcircuit and the component in their respective folders, then restart LTspice. The component will then show up as a menu selection.''

== Comparators ==

'''LM339'''

[[File:LM339.sub]] LM339 subcircuit. Place in \lib\sub 
[[File:LM339.asy]] LM339 component. Place in \lib\sym\Comparators 
[[File:LM339 test.asc]] Test circuit using the native LM339. You may want to use the alternate solver 
[http://www.datasheetcatalog.com/datasheets_pdf/L/M/3/3/LM339.shtml Datasheet]

== Opamps ==

'''TL072'''

[[File:TL072.sub]] TL072 subcircuit. Place in \lib\sub 
[[File:TL072.asy]] TL072 component. Place in \lib\sym\Opamps 
[[File:Pweoverdrivepreamp2.asc]] Overdrive Preamp circuit, using native TL072 
[http://www.datasheetcatalog.com/datasheets_pdf/T/L/0/7/TL072.shtml Datasheet] Original files adapted from [http://tech.groups.yahoo.com/group/LTspice/]

Main Page

2009-08-10T21:11:35Z

68.202.0.100:

<big>'''Welcome to LT Wiki!'''</big>

Please use this wiki to create helpful topics related to LTspice. For complete information about LTspice, please join the Yahoo group at [http://tech.groups.yahoo.com/group/LTspice/]. They are a great user group with a vast amount of helpful files and useful tips.

[[Most frequently asked questions for beginners]]

[[Adding a permanent component to LTspice]]

[[B sources (complete reference)]] 
[[B sources (common examples)]]

[[Components Library]] 
[[Convergence problems?]]

[[LTspice Hot Keys]]

[[SPICE and LTspice Courseware and Tutorials]]

SPICE and LTspice Courseware and Tutorials

2009-08-10T06:31:49Z

68.202.0.100:

[http://alternateenergies.com/LTwiki/files/modelling_diodes_spice_10.pdf How to Quickly Obtain Spice Parameters for Diodes]

[http://alternateenergies.com/LTwiki/files/impedance-electrolytic_white_paper.pdf Improved Spice Models of Aluminum Electrolytic Capacitors for Inverter Applications]

[http://csserver.evansville.edu/~richardson/courses/Circuits/EE210_Circuits_I/resources/swcadiii/ University of Evansville SwCAD III Library and Tutorials]

[http://www.seas.upenn.edu/~jan/spice/spice.overview.html UNIVERSITY of PENNSYLVANIA SPICE overview]

[http://ltspice.linear.com/software/scad3.pdf SwitcherCAD III manual from Linear]

Help:Contents

2009-08-10T05:42:37Z

68.202.0.100:

== Adding files for inclusion in your wiki ==
Email any relevant file (not copyrighted) you'd like hyperlinked to a wiki to:

support@alternateenergies.com

Regular contributors have file upload access. Please use the above email to request upload access. You will be automatically given file upload access if you log in and contribute to the pages.

Adding a permanent component to LTspice

2009-08-08T19:00:18Z

68.202.0.100: Created page with '== Adding LM339 as a Comparator == This technique allows you to add a frequently used part to the menu of LTSpice. In this way you don't have to use include statements, etc. T…'

== Adding LM339 as a Comparator ==

This technique allows you to add a frequently used part to the menu of LTSpice. In this way you don't have to use include statements, etc. These parts should not be overwritten during an LTSpice update.

1) Start with an existing .asy file if possible. Here we can use LTC1441.asy:

----
<PRE>
Version 4
SymbolType CELL
LINE Normal -32 32 32 64
LINE Normal -32 96 32 64
LINE Normal -32 32 -32 96
LINE Normal -28 48 -20 48
LINE Normal -28 80 -20 80
LINE Normal -24 84 -24 76
LINE Normal 0 32 0 48
LINE Normal 0 96 0 80
LINE Normal 4 44 12 44
LINE Normal 8 40 8 48
LINE Normal 4 84 12 84
WINDOW 0 16 32 Left 0
WINDOW 3 16 96 Left 0
SYMATTR Value LTC1441
SYMATTR Prefix X
SYMATTR SpiceModel LTC.lib
SYMATTR Value2 LTC1441
SYMATTR Description Dual Ultralow Power Comparator with Reference
PIN 32 64 NONE 0
PINATTR PinName OUT
PINATTR SpiceOrder 1
PIN 0 96 NONE 0
PINATTR PinName V-
PINATTR SpiceOrder 2
PIN -32 80 NONE 0
</PRE>
----

2) Edit the lines above as shown:

WAS:
<PRE>
SYMATTR Value LTC1441
SYMATTR Prefix X
SYMATTR SpiceModel LTC.lib
SYMATTR Value2 LTC1441
SYMATTR Description Dual Ultralow Power Comparator with Reference

NOW:

SYMATTR Value LM339
SYMATTR Prefix X
SYMATTR SpiceModel LM339.sub
SYMATTR Value2 LM339
SYMATTR Description Quad Single Supply 3V/5V Comparator LM339
</PRE>
3) Save this file as LM339.asy under \lib\sym\Comparators [http://alternateenergies.com/LTwiki/files/LM339.asy LM339.asy]

4) Put [http://alternateenergies.com/LTwiki/files/LM339.sub LM339.sub] file, put in \lib\sub

5) When LTSpice opens again, LM339 should be available as a component under 'Comparators'.

Note: Additionally look at [http://alternateenergies.com/LTwiki/files/LM339_DIP14.asy LM339_DIP14.asy] You may add this as well, if you want all four comparators.

Main Page

2009-08-08T18:43:06Z

68.202.0.100:

<big>'''Welcome to LT Wiki!'''</big>

Please use this wiki to create helpful topics related to LTspice. For complete information about LTspice, please join the Yahoo group at [http://tech.groups.yahoo.com/group/LTspice/]. They are a great user group with a vast amount of helpful files and useful tips.

[[Most frequently asked questions for beginners]]

[[B sources (complete reference)]]

[[B sources (common examples)]]

[[Convergence problems?]]

[[SPICE and LTspice Courseware and Tutorials]]

[[LTspice Hot Keys]]

[[Adding a permanent component to LTSpice]]

Help:Contents

2009-08-08T06:18:00Z

68.202.0.100:

== Adding files for inclusion in your wiki ==
Email any relevant file (not copyrighted) you'd like hyperlinked to a wiki to:

support@alternateenergies.com

I'll upload the file, and provide you the hyperlink you can include in your wiki.

Help:Contents

2009-08-08T06:16:48Z

68.202.0.100: Created page with '== Adding files that are not Hyperlinked == Email any relevant file (not copyrighted) you'd like hyperlinked to a wiki to: support@alternateenergies.com I'll upload the file, …'

== Adding files that are not Hyperlinked ==

Email any relevant file (not copyrighted) you'd like hyperlinked to a wiki to:

support@alternateenergies.com

I'll upload the file, and provide you the hyperlink you can include in your wiki.