Version 4
SHEET 1 880 716
WIRE 272 0 160 0
WIRE 320 0 272 0
WIRE 368 0 320 0
WIRE 160 32 160 0
WIRE 368 32 368 0
WIRE 272 80 272 0
WIRE 320 80 320 0
WIRE 160 112 160 96
WIRE 160 112 32 112
WIRE 368 112 368 96
WIRE 480 112 368 112
WIRE 160 128 160 112
WIRE 368 128 368 112
WIRE 160 208 160 192
WIRE 272 208 272 160
WIRE 272 208 160 208
WIRE 320 208 320 144
WIRE 320 208 272 208
WIRE 368 208 368 192
WIRE 368 208 320 208
WIRE 272 240 272 208
WIRE 272 336 272 320
WIRE 32 400 32 112
WIRE 224 400 32 400
WIRE 480 400 480 112
WIRE 480 400 304 400
FLAG 272 336 0
SYMBOL res 288 176 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 1000
SYMBOL diode 176 96 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMBOL diode 384 192 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMBOL diode 176 192 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMBOL diode 384 96 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMBOL voltage 320 400 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 5 1000 0 0 0 10)
SYMBOL res 256 224 R0
SYMATTR InstName R2
SYMATTR Value 10000000
SYMBOL cap 304 80 R0
SYMATTR InstName C1
SYMATTR Value 4.7µ
TEXT 14 264 Left 2 !.tran 0 0.01 0 0.00001