Version 4
SHEET 1 1028 680
WIRE 784 96 784 80
WIRE 176 112 176 80
WIRE 176 128 176 112
WIRE 192 128 176 128
WIRE 288 128 272 128
WIRE 784 128 784 96
WIRE 832 128 784 128
WIRE 944 128 912 128
WIRE 784 144 784 128
WIRE 176 160 176 128
WIRE 720 160 672 160
WIRE 752 160 720 160
WIRE 16 176 0 176
WIRE 32 176 16 176
WIRE 144 176 112 176
WIRE 912 176 816 176
WIRE 944 176 944 128
WIRE 944 176 912 176
WIRE 240 192 208 192
WIRE 256 192 240 192
WIRE 288 192 288 128
WIRE 288 192 256 192
WIRE 320 192 288 192
WIRE 432 192 384 192
WIRE 496 192 432 192
WIRE 512 192 496 192
WIRE 576 192 512 192
WIRE 720 192 656 192
WIRE 752 192 720 192
WIRE -336 208 -336 176
WIRE 128 208 -80 208
WIRE 144 208 128 208
WIRE 256 208 256 192
WIRE -336 224 -336 208
WIRE -80 224 -80 208
WIRE 0 224 0 176
WIRE 432 224 432 192
WIRE 496 224 496 192
WIRE 112 304 112 176
WIRE 256 304 256 288
WIRE 256 304 112 304
WIRE -336 320 -336 304
WIRE -80 320 -80 304
WIRE -80 320 -336 320
WIRE 0 320 0 304
WIRE 0 320 -80 320
WIRE 176 320 176 224
WIRE 176 320 0 320
WIRE 432 320 432 288
WIRE 432 320 176 320
WIRE 496 320 496 304
WIRE 496 320 432 320
WIRE 784 320 784 208
WIRE 784 320 496 320
WIRE 1024 320 784 320
WIRE -80 384 -80 320
FLAG -80 384 0
FLAG -336 208 Vcc
FLAG 176 112 Vcc
FLAG 128 208 NI
FLAG 112 176 INV
FLAG 240 192 Out
FLAG 16 176 2V
FLAG 784 96 Vcc
FLAG 720 160 2V
FLAG 912 176 Out2
FLAG 720 192 NI2
FLAG 512 192 pulse
SYMBOL voltage -80 208 M0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value SINE(2 0.5 100)
SYMBOL voltage 0 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2
SYMBOL voltage -336 208 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL res 128 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 240 192 R0
SYMATTR InstName R2
SYMATTR Value 500k
SYMBOL cap 384 176 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL diode 448 288 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL res 480 208 R0
SYMATTR InstName R3
SYMATTR Value 12k
SYMBOL EXTRA\\ExtraComparators\\LM139_UK 176 192 R0
SYMATTR InstName U1
SYMBOL res 288 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL EXTRA\\ExtraComparators\\LM139_UK 784 176 R0
SYMATTR InstName U2
SYMBOL res 928 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL res 672 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10k
TEXT -380 408 Left 2 !.tran 50m