Version 4
SHEET 1 880 680
WIRE 144 80 -32 80
WIRE 400 80 208 80
WIRE 512 80 400 80
WIRE -32 144 -32 80
WIRE 400 144 400 80
WIRE 512 144 512 80
WIRE 400 256 400 208
WIRE 512 256 512 224
WIRE -32 272 -32 224
FLAG -32 272 0
FLAG 400 256 0
FLAG 512 256 0
SYMBOL voltage -32 128 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PULSE(0 50 0 1µ 1µ 10 20)
SYMBOL cap 384 144 R0
SYMATTR InstName C1
SYMATTR Value 4700µF
SYMBOL res 496 128 R0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL diode 144 96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL diode 16 32 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2