Version 4 SHEET 1 1480 1200 WIRE -768 -112 -1680 -112 WIRE -1680 -48 -1680 -112 WIRE -1680 96 -1680 32 WIRE -1680 160 -1680 144 WIRE -1680 240 -1680 160 WIRE -2048 352 -2080 352 WIRE -1840 352 -2048 352 WIRE -1680 352 -1680 320 WIRE -1680 352 -1760 352 WIRE -1568 352 -1680 352 WIRE -1456 352 -1488 352 WIRE -992 352 -1456 352 WIRE -768 352 -768 -112 WIRE -768 352 -912 352 WIRE -576 352 -768 352 WIRE -912 384 -912 352 WIRE -992 400 -992 352 WIRE -960 400 -992 400 WIRE -2080 432 -2080 352 WIRE -960 448 -992 448 WIRE -1456 480 -1456 352 WIRE -1456 480 -1520 480 WIRE -1408 480 -1456 480 WIRE -992 480 -992 448 WIRE -992 480 -1216 480 WIRE -912 480 -912 464 WIRE -1520 528 -1520 480 WIRE -1408 528 -1408 480 WIRE -2080 560 -2080 512 WIRE -1216 576 -1216 480 WIRE -1056 576 -1216 576 WIRE -768 576 -768 352 WIRE -768 576 -976 576 WIRE -1520 688 -1520 608 WIRE -1456 688 -1520 688 WIRE -1408 688 -1408 592 WIRE -1408 688 -1456 688 WIRE -1104 688 -1152 688 WIRE -992 688 -1040 688 WIRE -1456 720 -1456 688 WIRE -1216 736 -1216 576 WIRE -1152 736 -1152 688 WIRE -1152 736 -1216 736 WIRE -992 736 -992 688 WIRE -928 736 -992 736 WIRE -768 736 -768 576 WIRE -768 736 -848 736 WIRE -1216 784 -1216 736 WIRE -1152 784 -1152 736 WIRE -1104 784 -1152 784 WIRE -992 784 -992 736 WIRE -992 784 -1040 784 WIRE -1216 896 -1216 864 FLAG -576 352 OUT FLAG -912 480 0 FLAG -1456 720 0 FLAG -1216 896 0 FLAG -2080 560 0 FLAG -2048 352 IN DATAFLAG -656 352 "$" DATAFLAG -1936 352 "$" SYMBOL cap -1696 96 R0 SYMATTR InstName C1 SYMATTR Value 16nF SYMBOL cap -1424 528 R0 SYMATTR InstName C2 SYMATTR Value 16nF SYMBOL res -1696 -64 R0 SYMATTR InstName R1 SYMATTR Value 10k SYMBOL res -1536 512 R0 SYMATTR InstName R2 SYMATTR Value 10k SYMBOL diode -1040 768 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL diode -1104 672 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res -1232 768 R0 SYMATTR InstName R3 SYMATTR Value 10k SYMBOL res -832 720 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName Rlimit SYMATTR Value 100k SYMBOL e -912 368 R0 SYMATTR InstName E1 SYMATTR Value 1e6 SYMBOL current -2080 512 R180 WINDOW 0 24 80 Left 2 WINDOW 3 24 0 Left 2 WINDOW 123 24 -22 Left 2 SYMATTR InstName I2 SYMATTR Value 0 SYMATTR Value2 AC 1A 0deg SYMBOL voltage -1680 224 R0 SYMATTR InstName V_Fdbk SYMATTR Value 0V SYMBOL voltage -1856 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 SYMATTR InstName V_Is SYMATTR Value 0V SYMBOL voltage -1584 352 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 SYMATTR InstName V_Regen SYMATTR Value 0V SYMBOL res -960 560 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value {R4_value} TEXT -1920 792 Left 2 !.AC DEC 10000 1Hz 100MegHz TEXT -2512 792 Left 2 ;.STEP param R4_value LIST 15k 20k 23k 25k TEXT -2384 736 Left 2 !.PARAM R4_value=23k TEXT -2088 656 Left 2 ;Spice Directives TEXT -1776 696 Left 2 !.OP TEXT -1816 736 Left 2 !.IC V(IN)=0V TEXT -1920 840 Left 2 ;.TRAN 100us 200ms 0 100us