Version 4 SHEET 1 1196 688 WIRE 128 144 80 144 WIRE 224 144 128 144 WIRE 624 144 288 144 WIRE 768 144 624 144 WIRE 80 240 80 144 WIRE 624 240 624 144 WIRE 80 448 80 320 WIRE 624 448 624 304 WIRE 624 448 80 448 WIRE 768 448 624 448 WIRE 768 480 768 448 FLAG 768 480 0 FLAG 768 144 OUT FLAG 128 144 IN SYMBOL voltage 80 224 R0 WINDOW 3 11 111 Left 2 SYMATTR Value PULSE(-3 7 0s 10us 10us 0.490ms 1ms) SYMATTR InstName Vi SYMBOL diode 608 304 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL cap 288 128 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value 1µ TEXT 328 544 Left 2 !.TRAN 100u 10m 0m 100u