Version 4 SHEET 1 2016 1508 WIRE 0 16 -432 16 WIRE 192 16 0 16 WIRE 592 16 192 16 WIRE 960 16 720 16 WIRE 192 48 192 16 WIRE 720 64 720 16 WIRE 960 64 960 16 WIRE 1056 64 960 64 WIRE 1344 64 1248 64 WIRE 1344 96 1344 64 WIRE 0 144 0 16 WIRE 992 160 864 160 WIRE 1056 160 992 160 WIRE 1376 160 1248 160 WIRE 1568 160 1456 160 WIRE 1696 160 1648 160 WIRE 192 192 192 128 WIRE 192 192 64 192 WIRE 592 192 592 16 WIRE -608 224 -1040 224 WIRE 1696 224 1696 160 WIRE 720 272 720 144 WIRE 720 272 640 272 WIRE 992 288 992 160 WIRE -608 304 -608 224 WIRE -608 304 -640 304 WIRE -560 304 -608 304 WIRE 192 304 192 192 WIRE -1040 336 -1040 224 WIRE 0 352 0 240 WIRE 128 352 0 352 WIRE 720 352 720 272 WIRE -704 368 -704 304 WIRE -704 368 -800 368 WIRE -496 368 -496 304 WIRE -432 368 -432 16 WIRE -432 368 -496 368 WIRE 0 400 0 352 WIRE -704 416 -704 368 WIRE -608 416 -640 416 WIRE -560 416 -608 416 WIRE -496 416 -496 368 WIRE 992 416 992 352 WIRE 592 480 592 288 WIRE 656 480 592 480 WIRE 720 480 720 432 WIRE 720 480 656 480 WIRE 864 496 864 160 WIRE -1040 528 -1040 416 WIRE -608 528 -608 416 WIRE -608 528 -1040 528 WIRE 0 544 0 480 WIRE 656 544 656 480 WIRE 0 672 0 624 WIRE 1248 688 1216 688 WIRE 1392 688 1328 688 WIRE 864 704 864 576 WIRE 1392 752 1392 688 WIRE 1216 768 1216 688 WIRE 192 944 192 400 WIRE 864 944 864 768 WIRE 864 944 192 944 WIRE 992 944 864 944 WIRE 1216 944 1216 848 WIRE 1216 944 1184 944 WIRE 1584 944 1216 944 WIRE 992 1040 944 1040 WIRE 1280 1040 1184 1040 WIRE -800 1328 -800 368 WIRE 0 1328 0 752 WIRE 0 1328 -800 1328 WIRE 720 1328 0 1328 WIRE 944 1328 944 1040 WIRE 944 1328 784 1328 WIRE 1280 1328 1280 1040 WIRE 0 1392 0 1328 FLAG 0 1392 0 FLAG 1280 1328 0 FLAG 1392 752 0 FLAG 1584 944 out FLAG 656 544 0 FLAG 1344 96 0 FLAG 1696 224 0 FLAG 992 416 0 SYMBOL pnp 128 400 M180 SYMATTR InstName Q1 SYMATTR Value 2N5401 SYMBOL pnp 64 240 R180 SYMATTR InstName Q2 SYMATTR Value 2N5401 SYMBOL res 176 32 R0 SYMATTR InstName R1 SYMATTR Value 330 SYMBOL res -16 384 R0 SYMATTR InstName R2 SYMATTR Value 56k SYMBOL res -16 528 R0 SYMATTR InstName R3 SYMATTR Value 56k SYMBOL res -16 656 R0 SYMATTR InstName R4 SYMATTR Value 56k SYMBOL voltage -1040 320 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 44 Left 2 WINDOW 3 -413 48 Left 2 SYMATTR SpiceLine Rser=10 SYMATTR Value 12 SYMATTR InstName V1 SYMBOL diode -704 320 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MURS120 SYMBOL diode -704 432 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value MURS120 SYMBOL diode -560 320 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value MURS120 SYMBOL diode -560 432 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D4 SYMATTR Value MURS120 SYMBOL Optos\\PC817A 1088 992 R0 SYMATTR InstName U1 SYMBOL zener 720 1344 R270 WINDOW 0 36 32 VTop 2 WINDOW 3 -4 32 VBottom 2 SYMATTR InstName D5 SYMATTR Value 1N750 SYMBOL res 1200 752 R0 SYMATTR InstName R5 SYMATTR Value 4.7k SYMBOL voltage 1232 688 R270 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 62 62 VRight 2 SYMATTR Value 3.3 SYMATTR InstName V2 SYMBOL diode 880 768 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D6 SYMATTR Value 1N4148 SYMBOL res 848 480 R0 SYMATTR InstName R6 SYMATTR Value 560 SYMBOL Optos\\PC817A 1152 112 R180 SYMATTR InstName U2 SYMBOL nmos 640 192 M0 SYMATTR InstName M1 SYMATTR Value AOB2500L SYMBOL res 704 48 R0 SYMATTR InstName R7 SYMATTR Value 1k SYMBOL res 704 336 R0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL voltage 1552 160 R270 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 62 62 VRight 2 SYMATTR Value PULSE(0 3.3 0 0 0 417u 833u 100) SYMATTR InstName V3 SYMBOL res 1472 144 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R9 SYMATTR Value 1k SYMBOL cap 976 288 R0 SYMATTR InstName C1 SYMATTR Value 1µ TEXT -1104 1048 Left 2 !.tran 100m TEXT -1456 432 Left 2 ;PULSE(0 12 0 0 0 417u 834u 100) TEXT -1456 504 Left 2 ;SINE(0 230 50 0 0)