Version 4
SHEET 1 1112 680
WIRE 736 224 544 224
WIRE 848 224 816 224
WIRE -48 240 -64 240
WIRE 48 240 16 240
WIRE 144 240 128 240
WIRE 304 240 144 240
WIRE 432 256 416 256
WIRE 544 256 544 224
WIRE 544 256 512 256
WIRE 304 272 288 272
WIRE 672 272 656 272
WIRE 736 272 720 272
WIRE -64 288 -64 240
WIRE -16 288 -16 272
WIRE -16 288 -64 288
WIRE 544 288 528 288
WIRE 720 288 720 272
WIRE -64 304 -64 288
WIRE 0 304 -64 304
WIRE 288 304 288 272
WIRE 288 304 176 304
WIRE 528 304 528 288
WIRE 528 304 288 304
WIRE 848 304 816 304
WIRE 144 320 144 240
WIRE 144 320 112 320
WIRE 672 320 672 272
WIRE 672 320 544 320
WIRE 0 336 -16 336
WIRE 176 336 176 304
WIRE 176 336 112 336
WIRE 208 336 176 336
WIRE 320 336 288 336
WIRE 352 336 320 336
WIRE 464 336 432 336
WIRE 176 352 176 336
WIRE 464 352 464 336
WIRE 816 352 512 352
WIRE -64 368 -64 304
WIRE 320 368 320 336
WIRE 544 368 544 320
WIRE 560 368 544 368
WIRE 512 384 512 352
WIRE 512 384 496 384
WIRE 688 384 672 384
WIRE 800 384 768 384
WIRE -16 400 -16 336
WIRE 112 400 112 336
WIRE 112 400 -16 400
WIRE 256 400 224 400
WIRE 528 400 528 304
WIRE 560 400 528 400
WIRE 256 416 256 400
WIRE 800 416 800 384
WIRE 816 416 800 416
WIRE -64 448 -64 432
WIRE -16 448 -16 400
WIRE -16 448 -64 448
WIRE 176 448 176 432
WIRE 224 448 224 400
WIRE 224 448 176 448
WIRE 320 448 320 432
WIRE 320 448 224 448
WIRE 464 448 464 416
WIRE 464 448 320 448
WIRE 704 448 464 448
WIRE 800 448 800 416
WIRE 800 448 768 448
FLAG 256 416 0
FLAG 816 416 T+
IOPIN 816 416 Out
FLAG 816 352 T-
IOPIN 816 352 Out
FLAG 736 224 L
IOPIN 736 224 In
FLAG 816 224 L
IOPIN 816 224 Out
FLAG 816 304 G
IOPIN 816 304 Out
FLAG 736 272 G
IOPIN 736 272 In
FLAG 720 288 0
SYMBOL Dig_Add\\TTL\\HC&U\\74hc132 48 256 R0
WINDOW 0 30 45 Left 0
WINDOW 3 -60 111 Left 0
SYMATTR InstName Uosc
SYMBOL voltage 176 336 R0
WINDOW 0 -61 16 Left 0
WINDOW 3 -8 58 Left 0
WINDOW 123 0 0 Left 0
SYMATTR InstName Vcc
SYMATTR Value 5
SYMATTR SpiceLine Rser=1
SYMBOL res 144 224 R90
WINDOW 0 16 106 VBottom 0
WINDOW 3 -12 13 VTop 0
SYMATTR InstName Rf
SYMATTR Value 22k
SYMBOL Robertugo\\Pote 48 256 M270
WINDOW 0 -16 105 VLeft 0
WINDOW 3 49 117 VLeft 0
WINDOW 123 -16 11 VCenter 0
SYMATTR InstName Uf
SYMATTR Value Rt=10K
SYMATTR Value2 Set=.85
SYMBOL cap -80 368 R0
SYMATTR InstName Cf
SYMATTR Value 1n
SYMBOL res 192 352 R270
WINDOW 0 16 7 VTop 0
WINDOW 3 45 101 VBottom 0
SYMATTR InstName Rs
SYMATTR Value 1e5
SYMBOL diode 304 368 R0
WINDOW 0 26 0 Left 0
WINDOW 3 30 64 Left 0
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL Dig_Add\\TTL\\HC&U\\74hc132 352 192 R0
WINDOW 0 -97 33 Left 0
WINDOW 3 -122 64 Left 0
SYMATTR InstName Ub1
SYMBOL res 448 320 R90
WINDOW 0 16 106 VBottom 0
WINDOW 3 -13 17 VTop 0
SYMATTR InstName R3
SYMATTR Value 33k
SYMBOL Robertugo\\Pote 480 448 R180
WINDOW 0 4 100 Right 0
WINDOW 3 102 48 Right 0
WINDOW 123 76 72 Center 0
SYMATTR InstName Uz
SYMATTR Value2 Set=.99
SYMBOL res 528 240 R90
WINDOW 0 17 110 VBottom 0
WINDOW 3 -12 12 VTop 0
SYMATTR InstName Rdif
SYMATTR Value 220
SYMBOL Dig_Add\\TTL\\HC&U\\74hc132 592 208 R0
WINDOW 0 -62 63 Left 0
WINDOW 3 23 44 Left 0
SYMATTR InstName Ub2
SYMBOL Dig_Add\\TTL\\HC&U\\74hc132 608 320 R0
WINDOW 0 -64 63 Left 0
WINDOW 3 -26 113 Left 0
SYMATTR InstName Ub3
SYMBOL res 784 368 R90
WINDOW 0 16 111 VBottom 0
WINDOW 3 -12 13 VTop 0
SYMATTR InstName Rint
SYMATTR Value 10k
SYMBOL cap 768 464 M270
WINDOW 0 16 65 VTop 0
WINDOW 3 43 -4 VBottom 0
SYMATTR InstName Cint
SYMATTR Value 100n
SYMBOL ind 832 320 M180
WINDOW 0 36 80 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName Lx
SYMATTR Value 5µ
TEXT -8 432 Left 0 !.tran 10m startup