Version 4 SHEET 1 2452 1780 WIRE -368 896 -512 896 WIRE -368 1056 -368 896 WIRE -368 1184 -368 1120 WIRE -368 1312 -368 1248 WIRE -368 1408 -368 1376 WIRE -352 -144 -352 -208 WIRE -352 -16 -352 -64 WIRE -192 896 -368 896 WIRE -192 1408 -368 1408 WIRE -192 1456 -192 1408 WIRE -160 1616 -160 1568 WIRE -160 1728 -160 1696 WIRE -128 1456 -128 1408 WIRE -96 -208 -352 -208 WIRE 64 -208 -96 -208 WIRE 64 -32 64 -208 WIRE 64 96 64 32 WIRE 64 224 64 160 WIRE 64 432 64 288 WIRE 64 896 -112 896 WIRE 64 1312 64 896 WIRE 64 1408 -128 1408 WIRE 64 1408 64 1376 WIRE 128 432 64 432 WIRE 240 -208 64 -208 WIRE 272 432 192 432 WIRE 272 480 272 432 WIRE 272 608 272 560 WIRE 368 432 272 432 WIRE 464 896 64 896 WIRE 464 944 464 896 WIRE 464 1072 464 1024 WIRE 496 -208 320 -208 WIRE 496 240 496 -208 WIRE 496 432 432 432 WIRE 496 432 496 304 WIRE 896 -208 496 -208 WIRE 896 -160 896 -208 WIRE 896 -32 896 -80 WIRE 976 912 832 912 WIRE 976 1152 976 912 WIRE 976 1424 976 1232 WIRE 1152 912 976 912 WIRE 1152 1424 976 1424 WIRE 1152 1472 1152 1424 WIRE 1184 1632 1184 1584 WIRE 1184 1744 1184 1712 WIRE 1216 1472 1216 1424 WIRE 1408 912 1232 912 WIRE 1408 1424 1216 1424 WIRE 1408 1424 1408 912 WIRE 1808 912 1408 912 WIRE 1808 960 1808 912 WIRE 1808 1088 1808 1040 FLAG -352 -16 0 FLAG 272 608 0 FLAG 896 -32 0 FLAG -160 1728 0 FLAG 464 1072 0 FLAG -96 -208 v+ FLAG -512 896 v+ FLAG 1808 1088 0 FLAG 832 912 v+ FLAG 1184 1744 0 SYMBOL res 256 464 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL voltage -352 -160 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL res 880 -176 R0 SYMATTR InstName Rload SYMATTR Value 100 SYMBOL LED 128 448 R270 WINDOW 0 72 32 VTop 0 WINDOW 3 -10 9 VBottom 0 SYMATTR InstName DLED_RED SYMATTR Value TLSV5100red SYMBOL LED 432 448 M270 WINDOW 0 72 32 VTop 0 WINDOW 3 -10 -16 VBottom 0 SYMATTR InstName DLED_GREEN SYMATTR Value TLSV5100green SYMBOL res 224 -192 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R_fuse SYMATTR Value R=1m+uramp(time-0.5)*1e9 SYMBOL diode 48 -32 R0 SYMATTR InstName D4 SYMATTR Value 1N4148 SYMBOL diode 48 96 R0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL diode 48 224 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL diode 480 240 R0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL Bicolor_led -144 1472 R0 SYMATTR InstName U1 SYMBOL res -176 1600 R0 SYMATTR InstName R10 SYMATTR Value 1k SYMATTR SpiceLine tol=1 pwr=0.1 SYMBOL res 448 928 R0 SYMATTR InstName Rload1 SYMATTR Value 100 SYMBOL res -208 912 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R_fuse1 SYMATTR Value R=1m+uramp(time-0.5)*1e9 SYMBOL diode -384 1056 R0 SYMATTR InstName D40 SYMATTR Value 1N4148 SYMBOL diode -384 1184 R0 SYMATTR InstName D30 SYMATTR Value 1N4148 SYMBOL diode -384 1312 R0 SYMATTR InstName D20 SYMATTR Value 1N4148 SYMBOL diode 48 1312 R0 SYMATTR InstName D10 SYMATTR Value 1N4148 SYMBOL res 1792 944 R0 SYMATTR InstName Rload2 SYMATTR Value 100 SYMBOL res 1136 928 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R_fuse2 SYMATTR Value R=1m+uramp(time-0.5)*1e9 SYMBOL res 960 1136 R0 SYMATTR InstName R200 SYMATTR Value 1k SYMBOL Bicolor_led 1200 1488 R0 SYMATTR InstName U2 SYMATTR Value TLSV5100 SYMBOL res 1168 1616 R0 SYMATTR InstName R100 SYMATTR Value 1k TEXT 670 632 Left 0 !.tran 0 1 0 1m TEXT 1072 600 Left 0 ;.model TLSV5100RED D(IS=2.1e-19 N=1.8 RS=10 Ikf=1.1m Eg=2.3 Cjo=50p Bv=6 Ibv=10u) TEXT 1072 568 Left 0 ;.model TLSV5100GREEN D(IS=1.7e-20 N=1.8 RS=8 Ikf=2m Eg=2.4 Cjo=50p Bv=6 Ibv=10u) TEXT 672 600 Left 0 !.OP TEXT 72 -288 Left 0 ;Fuse breaks at t=0.5sec for simulation. TEXT -384 -288 Left 0 ;Power Supply TEXT 208 -40 Left 0 ;Fuse Indicator TEXT 224 312 Left 0 ;Bicolor LED TEXT 832 -288 Left 0 ;Load TEXT 1128 -392 Left 0 ;Fuse Status Indicator With Bicolor LED\n-------------------------------------------------------------\nImproved version of the original circuit uploaded by Tim (Crouse?) .\nHelmut Sennewald, 5/22/2004\n \nThe LED model has been developed with a TLSV5100 on hand. \nThis diode is equivalent to the TLUV5300 from the electrical specification in the data sheet.\n \nGreen light on: Fuse ok\nRed light on: Fuse blown!\n \nD1 and D2 are necessary, if the supply voltage is above 8V as it is in this case.\nD1 prevents reverse breakdown of the green diode, if the fuse is open(blown).\n \nD3 and D4 guarantee that the red LED doesn't draw current, if the fuse is ok.\nThe whole LED will light more yellow instead of green without these two diodes,\nbecause the red LED has a lower forward voltage.\n \nChoose the value of R1 depending on the LED current.\nR1 = (Vbatt-3V) / I_LED\n \nSimulation:\nThe Fuse will break at t=0.5sec. Watch the current of the green and the red LED. TEXT 64 -376 Left 0 ;.OPTIONS TEMP={TEMP} TEXT 672 672 Left 0 ;.step PARAM TEMP LIST 26 27 TEXT -360 816 Left 0 ;Fuse breaks at t=0.5sec for simulation. TEXT -224 1064 Left 0 ;Fuse Indicator TEXT -216 1368 Left 0 ;Bicolor LED TEXT 400 816 Left 0 ;Load TEXT 664 216 Left 0 ;* File "LED_models.lib"\n*\n* TLUV5300 and TLSV5100 are from Vishay semiconductor.\n*\n.SUBCKT TLUV5300 1 2 3\nDred 1 2 TLSV5100RED\nDgreen 3 2 TLSV5100GREEN\n.ENDS\n .MODEL TLSV5100GREEN D(IS=1.7e-20 N=1.8 RS=8 Ikf=2m Eg=2.4 Cjo=50p Bv=6 Ibv=10u)\n.MODEL TLSV5100RED D(IS=2.1e-19 N=1.8 RS=10 Ikf=1.1m Eg=2.3 Cjo=50p Bv=6 Ibv=10u) TEXT 672 544 Left 0 !.INCLUDE LED_models.lib TEXT 984 832 Left 0 ;Fuse breaks at t=0.5sec for simulation. TEXT 1120 1080 Left 0 ;Fuse Indicator TEXT 1128 1384 Left 0 ;Bicolor LED TEXT 1744 832 Left 0 ;Load TEXT 792 720 Left 0 ;Alternative Circuit, R400 ensures reverse voltage requirement of green LED.\nDrawback: Current of red LED is half the current of the green LED. TEXT 1072 1176 Left 0 ;<----- Change to 1.1K !!! RECTANGLE Normal 608 656 -32 -80 2 RECTANGLE Normal 1104 48 800 -320 2 RECTANGLE Normal -176 32 -432 -320 2 RECTANGLE Normal 176 1760 -464 1024 2 RECTANGLE Normal 672 1152 368 784 2 RECTANGLE Normal 1520 1776 880 1040 2 RECTANGLE Normal 2016 1168 1712 800 2