Version 4
SHEET 1 880 1056
WIRE -192 144 -192 128
WIRE -192 240 -192 224
WIRE -192 368 -208 368
WIRE -192 384 -192 368
WIRE -192 480 -192 464
WIRE -192 592 -208 592
WIRE -160 768 -176 768
WIRE -160 784 -160 768
WIRE -160 880 -160 864
WIRE -96 592 -112 592
WIRE -96 608 -96 592
WIRE -64 320 -80 320
WIRE -64 336 -64 320
WIRE -64 432 -64 416
WIRE -64 560 -80 560
WIRE -64 592 -96 592
WIRE -48 128 -64 128
WIRE -32 720 -48 720
WIRE -32 736 -32 720
WIRE -32 832 -32 816
WIRE 48 592 32 592
WIRE 64 128 48 128
WIRE 64 160 48 160
WIRE 64 320 48 320
WIRE 64 352 48 352
WIRE 64 560 32 560
WIRE 160 560 64 560
WIRE 160 592 144 592
WIRE 176 320 160 320
WIRE 176 352 160 352
WIRE 272 560 256 560
WIRE 272 592 256 592
FLAG -192 240 0
FLAG -192 128 in
FLAG 64 160 0
FLAG -64 128 in
FLAG 64 128 out
FLAG 176 352 0
FLAG 176 320 ybar
FLAG 48 320 a
FLAG 48 352 b
FLAG -192 480 0
FLAG -208 368 a
FLAG -64 432 0
FLAG -80 320 b
FLAG 48 592 0
FLAG 64 560 qbar
FLAG -80 560 set
FLAG -208 592 q
FLAG 272 592 0
FLAG 272 560 q
FLAG 144 592 res
FLAG -160 880 0
FLAG -176 768 set
FLAG -32 832 0
FLAG -48 720 res
FLAG -96 672 0
SYMBOL voltage -192 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 repeat forever 1u 1 2u 0 endrepeat)
SYMBOL schmitt0504 0 80 R0
SYMATTR InstName U1
SYMBOL 2nor 112 272 R0
SYMATTR InstName U2
SYMBOL voltage -192 368 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 1 0 0.1u 0.1u 0.6u 2u)
SYMBOL voltage -64 320 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 1 0 0.1u 0.1u 1.2u 4u)
SYMBOL 2nor -16 512 R0
SYMATTR InstName U3
SYMBOL 2nor 208 512 R0
SYMATTR InstName U4
SYMBOL voltage -160 768 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value PULSE(0 1 0 0.1u 0.1u 0.3u 2u)
SYMBOL voltage -32 720 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V5
SYMATTR Value PULSE(0 1 1u 0.1u 0.1u 0.3u 2u)
SYMBOL res -96 576 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 1
SYMBOL cap -112 608 R0
WINDOW 3 34 54 Left 0
SYMATTR InstName C1
SYMATTR Value 4.7n
TEXT -208 928 Left 0 !.include schmitt0504.sub\n.include 2nor.sub\n.tran 0 6u 0 20n