Version 4 SHEET 1 6000 772 WIRE 448 160 448 192 WIRE 448 80 448 48 WIRE 448 48 -96 48 WIRE -96 48 -96 64 WIRE 448 384 448 448 WIRE 304 336 336 336 WIRE 336 304 336 336 WIRE 336 336 384 336 WIRE 336 224 336 192 WIRE 240 336 160 336 WIRE -96 336 -96 352 WIRE -96 144 -96 160 WIRE -96 432 -96 448 WIRE 448 192 480 192 WIRE 448 192 448 288 WIRE 640 192 656 192 WIRE 656 192 656 224 WIRE 656 192 720 192 WIRE 656 288 656 320 WIRE 784 192 816 192 WIRE 816 192 816 224 WIRE 896 304 896 320 WIRE 896 224 896 192 WIRE 896 192 816 192 WIRE 896 192 1008 192 WIRE 816 288 816 320 WIRE 480 192 576 192 WIRE 800 560 800 544 WIRE 800 544 752 544 WIRE 800 640 800 656 WIRE 688 544 672 544 WIRE 160 336 160 240 WIRE 160 240 128 240 WIRE 256 640 256 672 WIRE 256 560 256 528 WIRE 256 528 336 528 WIRE 160 336 48 336 WIRE -32 336 -96 336 WIRE 448 192 336 192 FLAG -96 160 0 FLAG -96 448 0 FLAG 448 448 0 FLAG 656 320 0 FLAG 816 320 0 FLAG 896 320 0 FLAG 1008 192 out IOPIN 1008 192 Out FLAG 480 192 Uc FLAG 800 656 0 FLAG 672 544 Uc IOPIN 672 544 In FLAG 128 240 in IOPIN 128 240 In FLAG 256 672 0 FLAG 336 528 U IOPIN 336 528 Out SYMBOL voltage -96 336 R0 WINDOW 0 34 78 Left 0 WINDOW 3 32 106 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value SINE(0 {U} 21.4Meg) SYMATTR Value2 AC 0 SYMBOL npn 384 288 R0 WINDOW 3 57 52 Left 0 SYMATTR Value BFR92 SYMATTR InstName Q1 SYMBOL voltage -96 48 R0 WINDOW 0 39 56 Left 0 WINDOW 3 40 82 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V2 SYMATTR Value 3 SYMBOL cap 240 352 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName C1 SYMATTR Value 0.1µ SYMBOL res 320 208 R0 WINDOW 3 36 58 Left 0 SYMATTR Value 100k SYMATTR InstName R2 SYMBOL res 432 64 R0 WINDOW 3 35 58 Left 0 SYMATTR Value 1.5k SYMATTR InstName R1 SYMBOL cap 640 176 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C2 SYMATTR Value 10n SYMBOL schottky 672 288 R180 WINDOW 0 -47 38 Left 0 WINDOW 3 -123 -2 Left 0 SYMATTR InstName D1 SYMATTR Value HSMS2812 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 720 208 R270 WINDOW 0 64 28 VTop 0 WINDOW 3 63 29 VBottom 0 SYMATTR InstName D2 SYMATTR Value HSMS2812 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 800 224 R0 WINDOW 0 18 17 Left 0 WINDOW 3 18 48 Left 0 SYMATTR InstName C3 SYMATTR Value 10n SYMBOL res 880 208 R0 WINDOW 3 36 59 Left 0 SYMATTR Value 10k SYMATTR InstName R3 SYMBOL cap 752 528 R90 WINDOW 0 56 32 VBottom 0 WINDOW 3 63 32 VTop 0 SYMATTR InstName C4 SYMATTR Value 10n SYMBOL res 784 544 R0 WINDOW 3 36 59 Left 0 SYMATTR Value 1.5k SYMATTR InstName R4 SYMBOL voltage 256 544 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V4 SYMATTR Value {U} SYMBOL res -48 352 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 0 56 VBottom 0 SYMATTR InstName R5 SYMATTR Value 50 TEXT -104 544 Left 0 !.tran 0 250u 249.75u TEXT -104 576 Left 0 !.step param U .01 .51 .05 TEXT -96 504 Left 0 ;.op TEXT -104 -112 Left 0 !.MODEL BFR92 NPN(IS=1.213e-16 BF=94.733 NF=1.0947 VAF=30 IKF=0.46227 ISE=1.2955e-13 NE=1.9052 BR=10.729 NR=0.8983 \n+VAR=14.599 IKR=0.01 ISC=7.5557e-16 NC=1.371 RB=14.998 IRB=1.652e-05 RBM=7.8145 RE=0.29088 RC=0.13793 CJE=1.0416e-14\n+VJE=0.70618 MJE=0.34686 TF=2.6796e-11 XTF=0.3817 VTF=0.32861 ITF=0.0044601 PTF=0 CJC=9.4647e-13 VJC=0.84079 \n+MJC=0.4085 XCJC=0.13464 TR=1.2744e-09 CJS=0 VJS=0.75 MJS=0 XTB=0 EG=1.11 XTI=3 FC=0.99545) TEXT -104 8 Left 0 !.MODEL HSMS2812 D(IS=4.8E-9, CJO=1.1E-12, VJ=.65, BV=25, IBV=10E-5 EG=0.69, N=1.08, RS=10, XTI=2, M=0.5 type=Schottky) TEXT 584 672 Left 0 ;LOAD TEXT 600 368 Left 0 ;UTILITY TEXT -104 -480 Left 0 ;Plotting V(out) versus V(U_stepped) in a .TRAN simulation\n \nThis circuit has been provided by Anton VLASITS.\n \nOnly the steady state is wanted and thus only the last few values of \neach simulation run will be stored/displayed. .tran 0 250u 249.75u\n \nIt is necessary to "mark datapoints" in the plot window to make it better\nvisible. Finally a curve can be easily drawn between the datapoints.\nPlot Settings -> Notes & Annotations -> Draw Line TEXT 352 672 Left 0 ;X-AXIS RECTANGLE Normal 960 400 576 112 RECTANGLE Normal 880 704 576 496 RECTANGLE Normal 448 704 192 496