Version 4 SHEET 1 880 680 WIRE 80 96 -16 96 WIRE 320 96 144 96 WIRE 416 96 320 96 WIRE -16 256 -16 176 WIRE 320 256 320 160 WIRE 320 256 -16 256 WIRE 416 256 416 176 WIRE 416 256 320 256 WIRE 416 320 416 256 FLAG 416 320 0 SYMBOL voltage -16 80 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PULSE(3.6 0 0.5 0.05 0.05 30) SYMBOL diode 80 112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMBOL cap 304 96 R0 SYMATTR InstName C1 SYMATTR Value 100µ SYMBOL res 400 80 R0 SYMATTR InstName R1 SYMATTR Value 100k TEXT -48 344 Left 2 !.tran 30 uic