Version 4
SHEET 1 880 680
WIRE -96 -256 -400 -256
WIRE 160 -256 -96 -256
WIRE 368 -256 160 -256
WIRE 368 -160 368 -256
WIRE -96 -80 -96 -256
WIRE 160 -48 160 -256
WIRE 368 -48 368 -96
WIRE 0 -32 -32 -32
WIRE -400 80 -400 -256
WIRE 64 112 64 16
WIRE 160 112 160 32
WIRE 160 112 64 112
WIRE 176 112 160 112
WIRE 368 112 368 32
WIRE 368 112 256 112
WIRE -96 144 -96 16
WIRE 0 144 0 64
WIRE 0 144 -96 144
WIRE 368 224 368 112
WIRE 704 224 560 224
WIRE -96 240 -96 144
WIRE 704 240 704 224
WIRE 672 320 560 320
WIRE 704 320 672 320
WIRE -96 368 -96 320
WIRE -400 496 -400 160
WIRE -96 496 -96 432
WIRE -96 496 -400 496
WIRE 112 496 -96 496
WIRE 368 496 368 320
WIRE 368 496 112 496
FLAG 112 496 0
FLAG 672 320 0
SYMBOL LED -80 368 M0
SYMATTR InstName D1
SYMBOL res 272 128 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 47k
SYMBOL polcap 384 -160 M0
SYMATTR InstName C2
SYMATTR Value 220µf
SYMATTR SpiceLine V=6.5
SYMBOL voltage 704 224 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -73 195 Left 2
SYMATTR InstName V1
SYMATTR Value PULSE(0 3 0 1us 1us 0.2 0.4 1)
SYMBOL voltage -400 64 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 3
SYMBOL Optos\\PC817C 464 272 M0
SYMATTR InstName U1
SYMBOL res 384 -64 M0
SYMATTR InstName R1
SYMATTR Value 330R
SYMBOL res 176 -64 M0
SYMATTR InstName R2
SYMATTR Value 100k
SYMBOL res -80 224 M0
SYMATTR InstName R3
SYMATTR Value 100
SYMBOL pnp 64 64 R180
SYMATTR InstName Q3
SYMBOL pnp -32 16 R180
SYMATTR InstName Q4
TEXT -456 520 Left 2 !.tran 0 10 0 0.1