Version 4 SHEET 1 880 680 WIRE 160 128 -80 128 WIRE -80 144 -80 128 WIRE 160 144 32 144 WIRE 288 144 224 144 WIRE 160 160 144 160 WIRE 144 176 144 160 WIRE 160 176 144 176 WIRE 144 208 144 176 WIRE 160 208 160 192 WIRE 160 208 144 208 WIRE 176 208 176 192 WIRE 176 208 160 208 WIRE 160 224 160 208 FLAG 160 224 0 FLAG -80 224 0 FLAG 32 224 0 FLAG 368 144 0 SYMBOL Digital\\and 192 96 R0 SYMATTR InstName A1 SYMBOL voltage -80 128 R0 WINDOW 3 -59 142 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PULSE(0 1 5u .1u .1u 10u 30u) SYMBOL voltage 32 128 R0 WINDOW 3 17 118 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value PULSE(0 1 10u .1u .1u 10u 30u) SYMBOL res 384 128 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k TEXT -140 290 Left 2 !.tran 0 100u 0 .1u