Version 4
SHEET 1 880 680
WIRE -320 256 -320 -48
WIRE -320 512 -320 336
WIRE -192 -48 -320 -48
WIRE -192 -32 -192 -48
WIRE -192 64 -192 48
WIRE -192 80 -192 64
WIRE -192 224 -192 160
WIRE -192 320 -192 224
WIRE -192 448 -192 384
WIRE -192 512 -320 512
WIRE -192 512 -192 448
WIRE -192 544 -192 512
WIRE -128 272 -128 192
WIRE -128 448 -192 448
WIRE -128 448 -128 336
WIRE -64 224 -192 224
WIRE -64 224 -64 128
WIRE -64 384 -64 224
WIRE -48 -48 -192 -48
WIRE -48 256 -48 -48
WIRE -48 496 -48 320
WIRE -32 64 -192 64
WIRE -32 128 -64 128
WIRE -32 192 -128 192
WIRE -32 256 -48 256
WIRE -32 320 -48 320
WIRE -32 384 -64 384
WIRE -32 448 -128 448
WIRE 272 320 256 320
WIRE 272 448 256 448
WIRE 272 448 272 320
WIRE 272 496 -48 496
WIRE 272 496 272 448
WIRE 304 128 256 128
WIRE 304 192 256 192
WIRE 304 192 304 128
WIRE 304 256 256 256
WIRE 304 416 304 256
WIRE 304 512 -192 512
WIRE 304 512 304 496
WIRE 352 -48 -48 -48
WIRE 352 64 256 64
WIRE 352 64 352 -48
WIRE 352 80 352 64
WIRE 352 384 256 384
WIRE 352 384 352 160
WIRE 368 256 304 256
WIRE 384 384 352 384
WIRE 448 256 432 256
WIRE 448 256 448 208
WIRE 464 256 448 256
WIRE 496 384 464 384
WIRE 496 384 496 368
WIRE 496 416 496 384
WIRE 496 512 304 512
WIRE 496 512 496 480
WIRE 560 192 304 192
WIRE 560 256 544 256
WIRE 560 256 560 192
WIRE 560 320 560 256
WIRE 560 512 496 512
WIRE 560 512 560 384
WIRE 592 208 448 208
WIRE 608 208 592 208
WIRE 608 384 608 208
WIRE 608 512 560 512
WIRE 608 512 608 464
FLAG -192 544 0
FLAG 496 368 Out
IOPIN 496 368 Out
FLAG 592 208 in
SYMBOL Robertugo\\556all 112 160 R0
WINDOW 0 0 -115 Center 0
SYMATTR InstName U1
SYMBOL res -208 -48 R0
WINDOW 0 31 49 Left 0
WINDOW 3 27 85 Left 0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res -176 176 R180
WINDOW 0 -21 64 Left 0
WINDOW 3 -31 28 Left 0
SYMATTR InstName R2
SYMATTR Value 6k8
SYMBOL cap -208 320 R0
SYMATTR InstName Ct
SYMATTR Value 10n
SYMBOL res 288 400 R0
SYMATTR InstName R3
SYMATTR Value 220
SYMBOL cap 544 320 R0
WINDOW 0 -26 10 Left 0
WINDOW 3 -28 53 Left 0
SYMATTR InstName Ct2
SYMATTR Value 2n
SYMBOL diode 432 240 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName D1
SYMATTR Value 1N914
SYMBOL res 560 240 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R4
SYMATTR Value 9k1
SYMBOL res 336 64 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMBOL res 480 368 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 100k
SYMBOL cap 480 416 R0
SYMATTR InstName Cf
SYMATTR Value 100n
SYMBOL cap -144 272 R0
SYMATTR InstName Cbp
SYMATTR Value 10n
SYMBOL voltage -320 240 R0
WINDOW 3 -13 60 Left 0
SYMATTR InstName Vcc
SYMATTR Value 15
SYMBOL voltage 608 368 R0
WINDOW 0 -19 58 Left 0
WINDOW 3 24 16 Invisible 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName Vin
SYMATTR Value PULSE(2.5 13 0 50m 50m 0 .1)
TEXT 398 -16 Left 0 !.tran .1 uic
TEXT 392 32 Left 0 !.params Vdd=15 Ronx=1