Version 4
SHEET 1 1164 680
WIRE -624 -208 -736 -208
WIRE -528 -208 -624 -208
WIRE -256 -208 -320 -208
WIRE -112 -208 -192 -208
WIRE 0 -208 -112 -208
WIRE 352 -208 0 -208
WIRE 432 -208 352 -208
WIRE 608 -208 512 -208
WIRE 1104 -208 944 -208
WIRE 944 -160 944 -208
WIRE -320 -96 -320 -208
WIRE -176 -96 -320 -96
WIRE 160 -96 -176 -96
WIRE 352 -96 352 -208
WIRE -528 -48 -528 -208
WIRE -320 -32 -320 -96
WIRE -176 -32 -176 -96
WIRE 608 -32 608 -208
WIRE 688 -32 608 -32
WIRE 912 -32 880 -32
WIRE 944 -32 944 -80
WIRE 944 -32 912 -32
WIRE 160 0 160 -96
WIRE 1104 0 1104 -208
WIRE 944 32 880 32
WIRE -528 64 -528 32
WIRE -448 64 -528 64
WIRE -176 64 -176 32
WIRE -176 64 -448 64
WIRE 688 64 496 64
WIRE -448 80 -448 64
WIRE 496 112 496 64
WIRE -448 160 -448 144
WIRE -448 160 -528 160
WIRE -320 160 -320 32
WIRE -320 160 -448 160
WIRE 352 160 352 -16
WIRE 352 160 272 160
WIRE 432 160 352 160
WIRE -736 192 -736 -208
WIRE -528 192 -528 160
WIRE -320 208 -320 160
WIRE -176 208 -176 64
WIRE -112 208 -112 -208
WIRE 0 208 0 -208
WIRE 160 208 160 80
WIRE 208 208 160 208
WIRE 160 224 160 208
WIRE 944 288 944 32
WIRE 1104 288 1104 80
WIRE 1104 288 944 288
WIRE -736 320 -736 272
WIRE -624 320 -736 320
WIRE -528 320 -528 272
WIRE -528 320 -624 320
WIRE -320 320 -320 272
WIRE -176 320 -176 272
WIRE -176 320 -320 320
WIRE -112 320 -112 272
WIRE -112 320 -176 320
WIRE 0 320 0 272
WIRE 0 320 -112 320
WIRE 160 320 160 304
WIRE 160 320 0 320
WIRE 272 320 272 256
WIRE 272 320 160 320
WIRE 496 320 496 208
WIRE 496 320 272 320
WIRE 944 320 944 288
WIRE -176 352 -176 320
FLAG -176 352 0
FLAG 912 -32 Out
FLAG -112 -208 DC
FLAG -624 -208 In1
FLAG 944 320 0
FLAG -624 320 In2
SYMBOL Optos\\CNY17-3 784 32 R0
SYMATTR InstName U1
SYMBOL voltage -736 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 325 60)
SYMBOL res -544 176 R0
SYMATTR InstName R1
SYMATTR Value 2Meg2
SYMBOL res 928 -176 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL voltage 1104 -16 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL diode -304 32 R180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAV99
SYMBOL diode -160 32 R180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value BAV99
SYMBOL diode -160 272 R180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value BAV99
SYMBOL diode -304 272 R180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value BAV99
SYMBOL npn 208 160 R0
SYMATTR InstName Q1
SYMATTR Value BC547B
SYMBOL res 528 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 2k2
SYMBOL diode -256 -192 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D5
SYMATTR Value BAV99
SYMBOL cap -128 208 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL res 144 -16 R0
SYMATTR InstName R4
SYMATTR Value 470k
SYMBOL npn 432 112 R0
SYMATTR InstName Q2
SYMATTR Value BC547B
SYMBOL res 336 -112 R0
SYMATTR InstName R5
SYMATTR Value 470k
SYMBOL zener 16 272 R180
WINDOW 0 24 72 Left 2
WINDOW 3 -119 0 Left 2
SYMATTR InstName D6
SYMATTR Value BZX84C12L
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -544 -64 R0
SYMATTR InstName R6
SYMATTR Value 2Meg2
SYMBOL res 144 208 R0
SYMATTR InstName R7
SYMATTR Value 1Meg
SYMBOL cap -464 80 R0
SYMATTR InstName C2
SYMATTR Value {Cpar}
TEXT -72 368 Left 2 !.tran 0 100m 0 uic
TEXT -584 368 Left 2 !.step param Cpar list 0 50p 100p