Version 4
SHEET 1 880 680
WIRE -448 -336 -448 -384
WIRE -352 -336 -352 -384
WIRE -256 -336 -256 -384
WIRE 64 -320 32 -320
WIRE 80 -320 64 -320
WIRE 192 -320 128 -320
WIRE 64 -224 32 -224
WIRE 80 -224 64 -224
WIRE 192 -224 192 -320
WIRE 192 -224 128 -224
WIRE 336 -224 192 -224
WIRE 432 -224 336 -224
WIRE -448 -208 -448 -256
WIRE -352 -208 -352 -256
WIRE -256 -208 -256 -256
WIRE 336 -208 336 -224
WIRE 64 -128 32 -128
WIRE 80 -128 64 -128
WIRE 192 -128 192 -224
WIRE 192 -128 128 -128
WIRE 336 -64 336 -128
FLAG 336 -64 0
FLAG -448 -208 0
FLAG -352 -208 0
FLAG -256 -208 0
FLAG 32 -320 A
IOPIN 32 -320 In
FLAG 32 -224 B
IOPIN 32 -224 In
FLAG 32 -128 C
IOPIN 32 -128 In
FLAG -448 -384 A
IOPIN -448 -384 Out
FLAG -352 -384 B
IOPIN -352 -384 Out
FLAG -256 -384 C
IOPIN -256 -384 Out
FLAG 432 -224 Y
IOPIN 432 -224 Out
SYMBOL diode 64 -304 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL diode 64 -208 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMBOL diode 64 -112 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D3
SYMBOL res 320 -224 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL voltage -448 -352 R0
WINDOW 3 -146 179 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 5 10m 1n 1n 10m 20m)
SYMBOL voltage -352 -352 R0
WINDOW 3 -160 212 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 20m 1n 1n 20m 40m)
SYMBOL voltage -256 -352 R0
WINDOW 3 -132 245 Left 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 5 40m 1n 1n 80m)
TEXT 152 -432 Left 3 ;Y=A+B+C
TEXT -480 -472 Left 2 !.tran 100m
