Version 4 SHEET 1 2024 684 WIRE 1088 -320 1088 -352 WIRE 1088 -288 1088 -320 WIRE 768 -240 768 -272 WIRE 1024 -240 768 -240 WIRE 768 -208 768 -240 WIRE -32 -128 -32 -160 WIRE 64 -128 -32 -128 WIRE 112 -128 64 -128 WIRE 224 -128 176 -128 WIRE 304 -128 224 -128 WIRE 1088 -128 1088 -192 WIRE 1216 -128 1088 -128 WIRE 1376 -128 1280 -128 WIRE 1472 -128 1376 -128 WIRE 1088 -112 1088 -128 WIRE -32 -96 -32 -128 WIRE 304 -96 304 -128 WIRE 1472 -96 1472 -128 WIRE 224 -80 224 -128 WIRE 768 -80 768 -144 WIRE 1376 -80 1376 -128 WIRE -176 -48 -240 -48 WIRE -96 -48 -176 -48 WIRE 624 -32 560 -32 WIRE 704 -32 624 -32 WIRE 224 0 224 -16 WIRE 304 0 304 -16 WIRE 1088 0 1088 -32 WIRE 1376 0 1376 -16 WIRE 1472 0 1472 -16 WIRE 64 80 64 -128 WIRE 1792 112 1792 80 WIRE 1824 112 1792 112 WIRE 1792 144 1792 112 WIRE 224 256 224 240 WIRE 304 256 304 240 WIRE 1088 256 1088 224 WIRE -176 272 -176 -48 WIRE -96 272 -176 272 WIRE 1376 272 1376 256 WIRE 1472 272 1472 256 WIRE 624 288 624 -32 WIRE 704 288 624 288 WIRE -32 352 -32 320 WIRE 64 352 64 144 WIRE 64 352 -32 352 WIRE 112 352 64 352 WIRE 224 352 224 320 WIRE 224 352 176 352 WIRE 304 352 304 336 WIRE 304 352 224 352 WIRE 768 352 768 336 WIRE 1088 368 1088 336 WIRE 1200 368 1088 368 WIRE 1376 368 1376 336 WIRE 1376 368 1264 368 WIRE 1472 368 1472 352 WIRE 1472 368 1376 368 WIRE -32 384 -32 352 WIRE 1088 400 1088 368 WIRE 768 448 768 416 WIRE 1024 448 768 448 WIRE 768 496 768 448 WIRE 1088 544 1088 496 WIRE 1088 576 1088 544 FLAG 1792 0 V++ IOPIN 1792 0 BiDir FLAG 1792 224 V-- IOPIN 1792 224 BiDir FLAG 1824 112 0 FLAG -432 320 0 FLAG -32 -240 V++ IOPIN -32 -240 BiDir FLAG -32 0 V-- IOPIN -32 0 BiDir FLAG 224 0 0 FLAG 224 -128 o+ FLAG -240 -48 in FLAG -432 240 in FLAG -32 224 V++ IOPIN -32 224 BiDir FLAG 224 240 0 FLAG -32 464 V-- IOPIN -32 464 BiDir FLAG 224 352 o- FLAG 768 -352 V++ IOPIN 768 -352 BiDir FLAG 768 16 V-- IOPIN 768 16 BiDir FLAG 1376 0 0 FLAG 1376 -128 o+2 FLAG 560 -32 in FLAG 768 240 V++ IOPIN 768 240 BiDir FLAG 1376 256 0 FLAG 768 576 V-- IOPIN 768 576 BiDir FLAG 1376 368 o-2 FLAG 1472 0 0 FLAG 1472 256 0 FLAG 304 0 0 FLAG 304 240 0 FLAG 1088 -352 V++ IOPIN 1088 -352 BiDir FLAG 1088 0 V-- IOPIN 1088 0 BiDir FLAG 1088 576 V-- IOPIN 1088 576 BiDir FLAG 1088 224 V++ IOPIN 1088 224 BiDir FLAG 1152 -320 0 FLAG 1152 544 0 SYMBOL voltage 1792 -16 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 15 SYMBOL voltage 1792 128 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value 15 SYMBOL voltage -432 224 R0 WINDOW 123 0 0 Left 2 WINDOW 39 24 124 Left 2 WINDOW 3 -19 161 Left 2 SYMATTR Value SINE(0 10 2.5meg 0 0 0 1) SYMATTR InstName V3 SYMBOL pnp2 -96 0 M180 SYMATTR InstName Q1 SYMATTR Value 2N3906 SYMBOL Misc\\EuropeanResistor -48 -256 R0 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL cap 208 -80 R0 SYMATTR InstName C1 SYMATTR Value 470p SYMBOL npn2 -96 224 R0 SYMATTR InstName Q2 SYMBOL diode 176 368 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL cap 208 256 R0 SYMATTR InstName C2 SYMATTR Value 470p SYMBOL Misc\\EuropeanResistor -48 368 R0 SYMATTR InstName R2 SYMATTR Value 1k SYMBOL cap 48 80 R0 SYMATTR InstName C3 SYMATTR Value 100n SYMBOL pnp2 704 16 M180 SYMATTR InstName Q4 SYMATTR Value 2N3906 SYMBOL Misc\\EuropeanResistor 752 -368 R0 SYMATTR InstName R3 SYMATTR Value 1k SYMBOL cap 1360 -80 R0 SYMATTR InstName C4 SYMATTR Value 2.2n SYMBOL npn2 704 240 R0 SYMATTR InstName Q5 SYMATTR Value 2N3904 SYMBOL cap 1360 272 R0 SYMATTR InstName C5 SYMATTR Value 2.2n SYMBOL Misc\\EuropeanResistor 752 480 R0 SYMATTR InstName R4 SYMATTR Value 1k SYMBOL Misc\\EuropeanResistor 288 -112 R0 SYMATTR InstName R5 SYMATTR Value 220k SYMBOL Misc\\EuropeanResistor 288 240 R0 SYMATTR InstName R6 SYMATTR Value 220k SYMBOL Misc\\EuropeanResistor 1456 -112 R0 SYMATTR InstName R7 SYMATTR Value 220k SYMBOL Misc\\EuropeanResistor 1456 256 R0 SYMATTR InstName R8 SYMATTR Value 220k SYMBOL diode 112 -112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D4 SYMATTR Value 1N4148 SYMBOL schottky 1216 -112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D5 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 752 -208 R0 SYMATTR InstName D3 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL npn2 1024 -288 R0 SYMATTR InstName Q3 SYMATTR Value 2N3904 SYMBOL Misc\\EuropeanResistor 1072 -128 R0 SYMATTR InstName R10 SYMATTR Value 1k SYMBOL pnp2 1024 496 M180 SYMATTR InstName Q6 SYMATTR Value 2N3906 SYMBOL schottky 1264 384 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL Misc\\EuropeanResistor 1072 240 R0 SYMATTR InstName R9 SYMATTR Value 1k SYMBOL schottky 752 352 R0 SYMATTR InstName D6 SYMATTR Value BAT54 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 1152 528 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value 100n SYMBOL cap 1152 -336 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value 100n TEXT -536 -192 Left 2 !.tran 10µ TEXT -528 -248 Left 2 !.options maxstep=1n