Version 4
SHEET 1 892 680
WIRE 592 64 544 64
WIRE 592 96 592 64
WIRE 496 128 464 128
WIRE 544 160 544 64
WIRE 176 240 -64 240
WIRE 320 240 240 240
WIRE 400 240 400 128
WIRE 400 240 320 240
WIRE 496 240 496 128
WIRE 496 240 480 240
WIRE 544 240 544 224
WIRE 544 240 496 240
WIRE 656 240 544 240
WIRE 752 240 720 240
WIRE 816 240 752 240
WIRE 816 272 816 240
WIRE -64 304 -64 240
WIRE 320 336 320 240
WIRE 320 336 144 336
WIRE 816 384 816 336
WIRE 144 448 144 336
WIRE 192 448 144 448
WIRE 400 448 256 448
WIRE 496 448 480 448
WIRE 544 448 496 448
WIRE 672 448 544 448
WIRE 752 448 736 448
WIRE 816 448 752 448
WIRE 544 496 544 448
WIRE 816 496 816 448
WIRE 400 528 400 448
WIRE 496 528 496 448
WIRE 496 528 464 528
WIRE -64 608 -64 384
WIRE 304 608 -64 608
WIRE 544 608 544 560
WIRE 544 608 304 608
WIRE 816 608 816 560
WIRE 816 608 544 608
FLAG 592 96 0
FLAG 304 608 0
FLAG 752 240 HSIGNAL
IOPIN 752 240 Out
FLAG 752 448 LSIGNAL
IOPIN 752 448 Out
FLAG 816 384 0
SYMBOL schottky 400 544 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL schottky 400 144 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMBOL voltage -64 288 R0
WINDOW 39 24 118 Left 2
SYMATTR SpiceLine Rser=0.1 Cpar=1n
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 5u 3n 3n 5u 10u 5)
SYMBOL polcap 528 496 R0
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL polcap 560 224 R180
WINDOW 0 24 57 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL res 496 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 47
SYMBOL res 496 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 47
SYMBOL Digital/inv 176 176 R0
SYMATTR InstName A1
SYMBOL Digital/inv 192 384 R0
SYMATTR InstName A2
SYMBOL Digital/inv 672 384 R0
SYMATTR InstName A3
SYMBOL Digital/inv 656 176 R0
SYMATTR InstName A4
SYMBOL cap 800 496 R0
SYMATTR InstName C3
SYMATTR Value 10p
SYMBOL cap 800 272 R0
SYMATTR InstName C4
SYMATTR Value 10p
TEXT -56 144 Left 2 !.tran .001n 20u