Version 4 SHEET 1 1728 680 WIRE -912 -480 -1104 -480 WIRE -624 -480 -848 -480 WIRE -576 -480 -624 -480 WIRE -432 -480 -496 -480 WIRE -368 -480 -432 -480 WIRE -304 -480 -368 -480 WIRE -368 -432 -368 -480 WIRE -1104 -320 -1104 -480 WIRE -1024 -320 -1104 -320 WIRE -912 -320 -944 -320 WIRE -896 -320 -912 -320 WIRE -800 -320 -896 -320 WIRE -624 -320 -624 -480 WIRE -624 -320 -720 -320 WIRE -368 -304 -368 -352 WIRE -1104 -224 -1104 -320 WIRE -1024 -224 -1104 -224 WIRE -896 -224 -896 -320 WIRE -896 -224 -960 -224 WIRE -1104 -176 -1104 -224 WIRE -896 -176 -896 -224 WIRE -768 -144 -784 -144 WIRE -672 -144 -688 -144 WIRE -640 -144 -672 -144 WIRE -544 -144 -560 -144 WIRE -784 -128 -784 -144 WIRE -304 -112 -336 -112 WIRE -192 -112 -224 -112 WIRE -672 -32 -672 -144 WIRE -640 -32 -672 -32 WIRE -544 -16 -544 -144 WIRE -544 -16 -576 -16 WIRE -464 -16 -480 -16 WIRE -448 -16 -464 -16 WIRE -336 -16 -336 -112 WIRE -336 -16 -368 -16 WIRE -304 -16 -336 -16 WIRE -192 -16 -192 -112 WIRE -192 -16 -240 -16 WIRE -896 0 -896 -96 WIRE -768 0 -896 0 WIRE -640 0 -704 0 WIRE -896 64 -896 0 WIRE -336 64 -336 -16 WIRE -304 64 -336 64 WIRE -192 64 -192 -16 WIRE -192 64 -240 64 WIRE -896 144 -896 128 WIRE -192 144 -192 64 WIRE -336 176 -336 64 WIRE -320 176 -336 176 WIRE -192 192 -192 144 WIRE -192 192 -256 192 WIRE -320 208 -368 208 WIRE -896 384 -896 224 FLAG -368 -304 0 FLAG -304 -480 12V FLAG -896 384 0 FLAG -1104 -176 0 FLAG -432 -480 +12 FLAG -288 160 +12 FLAG -288 224 0 FLAG -912 -320 +6 FLAG -368 208 +6 FLAG -608 -48 +12 FLAG -608 16 0 FLAG -784 -64 0 FLAG -464 -16 in FLAG -192 144 out1 FLAG -192 -112 out SYMBOL voltage -368 -448 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 12 SYMBOL voltage -896 128 R0 WINDOW 3 -65 40 Right 2 WINDOW 123 24 44 Left 2 WINDOW 39 0 0 Left 2 SYMATTR Value PULSE(-100m 100m 0 1m 1m 0 2m) SYMATTR Value2 AC .1 SYMATTR InstName V3 SYMBOL res -352 -32 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1k0 SYMBOL cap -480 -32 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 3µ3 SYMBOL diode -240 -32 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL diode -304 80 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res -592 -464 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R8 SYMATTR Value 330R SYMBOL res -912 -192 R0 SYMATTR InstName R9 SYMATTR Value 1meg SYMBOL cap -912 64 R0 SYMATTR InstName C4 SYMATTR Value 100n SYMBOL cap -848 -496 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 100µ SYMBOL res -704 -336 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R11 SYMATTR Value 100k SYMBOL res -928 -336 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R12 SYMATTR Value 100k SYMBOL cap -960 -240 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 1µ0 SYMBOL FerriteBead -736 0 R90 WINDOW 0 -16 0 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1.385µ SYMATTR SpiceLine Ipk=0.2 Rser=0.55 Rpar=1500 Cpar=1.04p mfg="Wurth Elektronik" pn="742 792 091" SYMBOL Opamps\\UniversalOpamp2 -288 192 R0 SYMATTR InstName U1 SYMATTR Value2 Avol=1Meg GBW=3Meg Slew=3Meg SYMBOL Opamps\\UniversalOpamp2 -608 -16 R0 SYMATTR InstName U2 SYMBOL res -544 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 4k7 SYMBOL res -672 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 2k2 SYMBOL cap -800 -128 R0 SYMATTR InstName C3 SYMATTR Value 1µ0 SYMBOL res -208 -128 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value {x} TEXT -1264 16 Left 2 !.tran 0 122m 120m 10u TEXT -704 328 Left 2 !.step param x list 3k 100k