Version 4
SHEET 1 880 852
WIRE -64 -320 -96 -320
WIRE -16 -320 -64 -320
WIRE 192 -320 -16 -320
WIRE 384 -320 192 -320
WIRE 192 -288 192 -320
WIRE 128 -240 96 -240
WIRE -16 -224 -16 -240
WIRE 80 -224 -16 -224
WIRE 288 -224 256 -224
WIRE -16 -208 -16 -224
WIRE -96 -192 -96 -320
WIRE 288 -160 288 -224
WIRE 320 -160 288 -160
WIRE 384 -160 384 -240
WIRE -16 -112 -16 -128
WIRE 96 -112 96 -240
WIRE 96 -112 -16 -112
WIRE -16 -96 -16 -112
WIRE 288 -96 288 -160
WIRE 288 -96 256 -96
WIRE 80 -80 80 -224
WIRE 128 -80 80 -80
WIRE -96 -16 -96 -128
WIRE -16 -16 -96 -16
WIRE 192 -16 192 -32
WIRE 192 -16 -16 -16
WIRE -96 16 -96 -16
WIRE -64 16 -96 16
WIRE -16 16 -64 16
WIRE 192 16 -16 16
WIRE 288 16 192 16
WIRE 384 16 384 -160
WIRE 288 32 288 16
WIRE 192 48 192 16
WIRE 128 96 96 96
WIRE -16 112 -16 96
WIRE 80 112 -16 112
WIRE 288 112 256 112
WIRE -16 128 -16 112
WIRE -96 144 -96 16
WIRE 288 176 288 112
WIRE 320 176 288 176
WIRE 384 176 384 96
WIRE -16 224 -16 208
WIRE 96 224 96 96
WIRE 96 224 -16 224
WIRE -16 240 -16 224
WIRE 288 240 288 176
WIRE 288 240 256 240
WIRE 80 256 80 112
WIRE 128 256 80 256
WIRE 384 272 384 176
WIRE -96 320 -96 208
WIRE -16 320 -96 320
WIRE 192 320 192 304
WIRE 192 320 -16 320
WIRE -96 352 -96 320
WIRE -64 352 -96 352
WIRE -16 352 -64 352
WIRE 192 352 -16 352
WIRE 192 384 192 352
WIRE 128 432 96 432
WIRE -16 448 -16 432
WIRE 80 448 -16 448
WIRE 288 448 256 448
WIRE 320 448 288 448
WIRE 384 448 384 352
WIRE -16 464 -16 448
WIRE -96 480 -96 352
WIRE 384 480 384 448
WIRE -16 560 -16 544
WIRE 96 560 96 432
WIRE 96 560 -16 560
WIRE -16 576 -16 560
WIRE 288 576 288 448
WIRE 288 576 256 576
WIRE 80 592 80 448
WIRE 128 592 80 592
WIRE 384 624 384 560
WIRE 416 624 384 624
WIRE -96 656 -96 544
WIRE -16 656 -96 656
WIRE 192 656 192 640
WIRE 192 656 -16 656
WIRE 640 688 608 688
WIRE -96 704 -96 656
WIRE 192 720 192 656
WIRE 416 720 192 720
WIRE 192 768 192 720
WIRE 640 768 640 688
WIRE 640 768 192 768
FLAG -96 704 0
FLAG -64 -320 BT1
FLAG -64 16 BT2
FLAG -64 352 BT3
SYMBOL res -32 0 R0
SYMATTR InstName R1
SYMATTR Value 1meg
SYMBOL res -32 112 R0
SYMATTR InstName R2
SYMATTR Value 58.3k
SYMBOL res -32 224 R0
SYMATTR InstName R3
SYMATTR Value 133k
SYMBOL Misc\\cell -96 144 R0
WINDOW 3 -80 -142 VRight 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 3.2 1 3.2 1.1 2.0 1.9 4.0 2.0 3.2)
SYMBOL res 368 0 R0
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res -32 -336 R0
SYMATTR InstName R5
SYMATTR Value 1meg
SYMBOL res -32 -224 R0
SYMATTR InstName R6
SYMATTR Value 58.3k
SYMBOL res -32 -112 R0
SYMATTR InstName R7
SYMATTR Value 133k
SYMBOL Misc\\cell -96 -192 R0
WINDOW 3 -49 -130 VRight 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 3.2 0.1 3.2 0.2 2.0 0.9 4.0 1.0 3.2)
SYMBOL res 368 -336 R0
SYMATTR InstName R8
SYMATTR Value 1k
SYMBOL res -32 336 R0
SYMATTR InstName R9
SYMATTR Value 1meg
SYMBOL res -32 448 R0
SYMATTR InstName R10
SYMATTR Value 58.3k
SYMBOL res -32 560 R0
SYMATTR InstName R11
SYMATTR Value 133k
SYMBOL Misc\\cell -96 480 R0
WINDOW 3 -40 -191 VRight 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 3.2 2.0 3.2 2.1 2.0 2.9 4.0 3.0 3.2)
SYMBOL res 368 256 R0
SYMATTR InstName R12
SYMATTR Value 1k
SYMBOL Optos\\CNY17-1 512 688 R0
SYMATTR InstName U4
SYMBOL diode 384 -176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 384 160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 384 432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL Comparators\\LT6700-1 192 -160 R0
SYMATTR InstName U1
SYMBOL Comparators\\LT6700-1 192 176 R0
SYMATTR InstName U2
SYMBOL Comparators\\LT6700-1 192 512 R0
SYMATTR InstName U3
SYMBOL res 368 464 R0
SYMATTR InstName R14
SYMATTR Value 1k
TEXT 464 568 Left 2 !.tran 3.5 startup