Version 4
SHEET 1 880 680
WIRE 272 32 -64 32
WIRE 272 112 272 32
WIRE 256 128 32 128
WIRE 432 144 320 144
WIRE 256 160 144 160
WIRE -64 224 -64 32
WIRE 32 224 32 128
WIRE 144 224 144 160
WIRE -64 384 -64 304
WIRE 32 384 32 304
WIRE 32 384 -64 384
WIRE 144 384 144 304
WIRE 144 384 32 384
WIRE 256 384 144 384
WIRE 272 384 272 176
WIRE 272 384 256 384
WIRE 432 384 272 384
WIRE 256 448 256 384
FLAG 256 448 0
SYMBOL voltage 32 208 R0
WINDOW 3 -531 -71 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 5 0.1 0.01 0.01 0.1 1 100)
SYMATTR InstName V1
SYMBOL voltage 144 208 R0
WINDOW 3 -643 -32 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value PULSE(0 5 0.2 0.01 0.01 0.1 1 100)
SYMATTR InstName V2
SYMBOL voltage -64 208 R0
WINDOW 3 -432 -108 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value 5
SYMATTR InstName V3
SYMBOL TTL\ und\ CMOS\\SN7400 288 80 R0
WINDOW 3 16 112 Left 0
SYMATTR InstName U1
TEXT -504 56 Left 0 !.tran 1