Version 4
SHEET 1 880 680
WIRE -48 0 -128 0
WIRE 128 0 32 0
WIRE -128 32 -128 0
WIRE -224 128 -320 128
WIRE -32 128 -224 128
WIRE 128 128 128 64
WIRE 128 128 -32 128
WIRE 272 128 128 128
WIRE 336 128 272 128
WIRE 464 128 336 128
WIRE 592 128 544 128
WIRE -320 144 -320 128
WIRE 592 160 592 128
WIRE -224 192 -224 128
WIRE 304 192 272 192
WIRE 336 192 304 192
WIRE -32 272 -32 128
WIRE 128 272 128 128
WIRE 304 320 304 192
WIRE -224 432 -224 272
WIRE -32 432 -32 352
WIRE -32 432 -224 432
WIRE 16 432 -32 432
WIRE 128 432 128 336
WIRE 128 432 96 432
WIRE 304 432 304 400
WIRE 304 432 128 432
WIRE 464 432 304 432
WIRE 608 432 544 432
WIRE 608 448 608 432
FLAG -320 144 0
FLAG -128 32 0
FLAG 592 160 0
FLAG 608 448 0
SYMBOL voltage -224 288 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 10m 50)
SYMBOL res -16 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R2
SYMATTR Value 100
SYMBOL res 112 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200
SYMBOL res 288 304 R0
SYMATTR InstName R3
SYMATTR Value 50
SYMBOL diode 320 128 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 288 192 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL cap 112 272 R0
SYMATTR InstName C1
SYMATTR Value 2200p
SYMBOL cap 112 0 R0
SYMATTR InstName C2
SYMATTR Value 2200p
SYMBOL voltage 48 0 R90
WINDOW 0 -32 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value -2.5
SYMBOL res 560 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100000K
SYMBOL res 560 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 100000K
TEXT -258 378 Left 2 !.tran 1 startup