Version 4
SHEET 1 1300 680
WIRE -672 112 -672 -48
WIRE -672 240 -672 176
WIRE -656 224 -656 48
WIRE -640 384 -640 -16
WIRE -624 -16 -640 -16
WIRE -624 48 -656 48
WIRE -624 112 -672 112
WIRE -624 176 -672 176
WIRE -512 -48 -672 -48
WIRE -384 176 -400 176
WIRE -384 288 -384 176
WIRE -384 384 -640 384
WIRE -384 384 -384 352
WIRE -368 48 -400 48
WIRE -368 112 -400 112
WIRE -368 112 -368 48
WIRE -352 -16 -400 -16
WIRE -352 -16 -352 -64
WIRE -352 240 -672 240
WIRE -352 240 -352 -16
WIRE -288 -48 -512 -48
WIRE -288 0 -288 -48
WIRE -288 112 -368 112
WIRE -288 112 -288 80
WIRE -288 224 -656 224
WIRE -288 224 -288 112
WIRE -288 288 -288 224
WIRE -288 384 -384 384
WIRE -288 384 -288 352
WIRE -224 -64 -352 -64
WIRE -224 176 -224 -64
WIRE -224 272 -224 176
WIRE -224 384 -288 384
WIRE -224 384 -224 352
WIRE -224 400 -224 384
WIRE -176 384 -224 384
WIRE -176 384 -176 -16
WIRE -160 -48 -288 -48
WIRE -160 48 -160 -48
WIRE -160 240 -160 112
WIRE -144 -16 -176 -16
WIRE -144 48 -160 48
WIRE -144 112 -160 112
WIRE -144 176 -224 176
WIRE -128 240 -160 240
WIRE -128 288 -128 240
WIRE -128 384 -176 384
WIRE -128 384 -128 352
WIRE -96 240 -128 240
WIRE -64 -64 -224 -64
WIRE 0 240 -16 240
WIRE 32 240 0 240
WIRE 32 272 32 240
WIRE 32 384 -128 384
WIRE 32 384 32 336
WIRE 96 -64 -64 -64
WIRE 96 -16 80 -16
WIRE 96 -16 96 -64
WIRE 112 48 80 48
WIRE 112 80 112 48
WIRE 112 112 80 112
WIRE 112 112 112 80
WIRE 112 240 32 240
WIRE 112 272 112 240
WIRE 112 384 32 384
WIRE 112 384 112 352
WIRE 192 -64 96 -64
WIRE 192 -32 192 -64
WIRE 192 80 112 80
WIRE 192 80 192 48
WIRE 192 272 192 80
WIRE 192 384 112 384
WIRE 192 384 192 336
WIRE 352 176 80 176
WIRE 352 176 352 160
WIRE 352 240 352 176
WIRE 352 384 192 384
WIRE 352 384 352 320
FLAG -224 400 0
FLAG -512 -48 Sqr
FLAG 352 160 S_In
IOPIN 352 160 In
FLAG -64 -64 Vcc
FLAG 0 240 Out
SYMBOL voltage -224 256 M0
WINDOW 0 30 100 Top 0
WINDOW 3 0 71 Bottom 0
SYMATTR InstName Vcc
SYMATTR Value 12v
SYMATTR Value2 AC 1
SYMATTR SpiceLine Rser=.001
SYMBOL cap 208 272 M0
WINDOW 0 3 12 Right 0
WINDOW 3 11 55 Right 0
SYMATTR InstName C4
SYMATTR Value 12n
SYMBOL res 208 64 R180
WINDOW 0 36 40 Invisible 0
WINDOW 3 47 39 VRight 0
SYMATTR InstName R2
SYMATTR Value 1k5
SYMATTR SpiceLine tol=1 pwr=0.1
SYMBOL voltage 352 224 M0
WINDOW 0 0 45 Top 0
WINDOW 3 57 165 Top 0
WINDOW 123 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(4 4 1k)
SYMATTR SpiceLine Rser=1
SYMBOL 555_ALL 16 96 R0
WINDOW 38 -80 71 Left 0
SYMATTR InstName U2
SYMBOL cap -272 288 M0
SYMATTR InstName Ct1
SYMATTR Value 1n8
SYMBOL cap -368 288 M0
SYMATTR InstName Cbp1
SYMATTR Value 10n
SYMBOL res -304 -16 R0
WINDOW 0 -34 35 Left 0
WINDOW 3 -35 65 Left 0
SYMATTR InstName R3
SYMATTR Value 10k
SYMBOL 555_ALL -464 96 R0
WINDOW 38 -80 71 Left 0
SYMATTR InstName U1
SYMBOL cap 16 272 R0
WINDOW 0 38 33 Left 0
SYMATTR InstName 6
SYMATTR Value 22µ
SYMATTR SpiceLine V=25 Irms=0 Rser=0.003 MTBF=0 Lser=0 mfg="TDK" pn="C575OX5RIE226M" type="X5R" ppPkg=1
SYMBOL ind -112 256 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 500µ
SYMATTR SpiceLine Ipk=2 Rser=0.07 Rpar=8000 Cpar=10p mfg="Gowanda" pn="894AT5003V"
SYMBOL res 96 256 R0
SYMATTR InstName RL
SYMATTR Value 8
SYMBOL zener -144 352 M180
WINDOW 0 24 72 Left 0
WINDOW 3 24 0 Left 0
SYMATTR InstName D1
SYMATTR Value BZX84C12L
TEXT -642 400 Left 0 !.tran 0 5m 1m startup
TEXT 224 40 Left 0 !.Four 1k V(Out)