Version 4 SHEET 1 880 680 WIRE 176 112 80 112 WIRE 288 112 256 112 WIRE 80 128 80 112 WIRE 80 224 80 208 WIRE 288 224 288 176 WIRE 288 224 80 224 WIRE 80 240 80 224 FLAG 80 240 0 SYMBOL res 272 96 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 1k SYMBOL cap 272 112 R0 SYMATTR InstName C1 SYMATTR Value 1µ SYMBOL voltage 80 112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PULSE(0 1 30u 1n 1n 30u 60u) TEXT -184 128 Left 2 !.tran 0 3m 0 .1u