Version 4
SHEET 1 1000 708
WIRE 96 224 48 224
WIRE 288 224 176 224
WIRE 800 224 352 224
WIRE 896 224 800 224
WIRE -400 256 -416 256
WIRE -352 256 -400 256
WIRE -272 256 -352 256
WIRE -128 256 -176 256
WIRE -64 256 -128 256
WIRE 112 256 -64 256
WIRE 400 256 112 256
WIRE 560 256 544 256
WIRE 656 256 560 256
WIRE 160 288 128 288
WIRE 400 288 400 256
WIRE 400 288 384 288
WIRE 656 304 656 256
WIRE -128 320 -128 256
WIRE 48 336 48 224
WIRE -416 352 -416 256
WIRE -352 352 -352 256
WIRE -336 352 -352 352
WIRE -224 352 -224 320
WIRE -224 352 -256 352
WIRE 160 352 96 352
WIRE 416 352 384 352
WIRE 512 352 496 352
WIRE -32 384 -32 368
WIRE -16 384 -32 384
WIRE 560 384 560 256
WIRE -224 400 -224 352
WIRE -64 400 -64 256
WIRE 160 416 144 416
WIRE 400 416 384 416
WIRE 512 416 512 352
WIRE 512 416 400 416
WIRE 656 416 656 384
WIRE 704 416 656 416
WIRE 800 416 800 224
WIRE 800 416 768 416
WIRE 512 432 512 416
WIRE 48 448 48 432
WIRE 96 448 96 352
WIRE 96 448 48 448
WIRE 656 448 656 416
WIRE 800 448 800 416
WIRE 896 448 896 224
WIRE -416 480 -416 432
WIRE -368 480 -416 480
WIRE 112 480 112 256
WIRE 160 480 112 480
WIRE 416 480 384 480
WIRE -368 496 -368 480
WIRE -64 512 -64 480
WIRE 96 512 96 448
WIRE 96 512 -64 512
WIRE 400 512 400 416
WIRE 400 512 96 512
WIRE 144 528 144 416
WIRE 608 528 144 528
WIRE -416 560 -416 480
WIRE -224 560 -224 464
WIRE -224 560 -416 560
WIRE -128 560 -128 384
WIRE -128 560 -224 560
WIRE 128 560 128 288
WIRE 128 560 -128 560
WIRE 512 560 512 496
WIRE 512 560 128 560
WIRE 560 560 560 448
WIRE 560 560 512 560
WIRE 656 560 656 544
WIRE 656 560 560 560
WIRE 800 560 800 512
WIRE 800 560 656 560
WIRE 896 560 896 528
WIRE 896 560 800 560
FLAG 544 256 +B
FLAG -400 256 +B
FLAG -368 496 0
FLAG -32 368 +B
SYMBOL Robertugo\\555_all 320 400 R0
WINDOW 38 -87 82 Left 0
SYMATTR InstName U1
SYMATTR SpiceModel 5b1sw555
SYMBOL npn2 -272 320 R270
WINDOW 0 40 29 VRight 0
WINDOW 3 80 7 VRight 0
SYMATTR InstName Q1
SYMATTR Value BC546A
SYMBOL zener -208 464 R180
WINDOW 0 40 30 Left 0
WINDOW 3 24 0 Invisible 0
SYMATTR InstName Dz8v2
SYMATTR Value BZX84C8V2L
SYMBOL res -240 336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 120k
SYMBOL polcap -144 320 R0
WINDOW 0 -32 13 Left 0
WINDOW 3 -46 60 Left 0
SYMATTR InstName Cf
SYMATTR Value 3.3µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=50 Irms=66m Rser=2.6 Lser=0 mfg="Nichicon" pn="UPL1H3R3MAH" type="Al electrolytic"
SYMBOL voltage -416 336 R0
WINDOW 0 -16 58 Left 0
WINDOW 3 37 60 Left 0
SYMATTR InstName Vb
SYMATTR Value 48v
SYMBOL res 512 336 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName Rt
SYMATTR Value 13k
SYMBOL cap 496 432 R0
WINDOW 0 -23 8 Left 0
WINDOW 3 -47 62 Left 0
SYMATTR InstName Ct
SYMATTR Value 220p
SYMBOL pnp2 -16 432 M180
WINDOW 0 21 47 Left 0
WINDOW 3 -43 122 Left 0
SYMATTR InstName Q2
SYMATTR Value BC556A
SYMBOL res 192 208 R90
WINDOW 0 44 107 VBottom 0
WINDOW 3 17 0 VTop 0
SYMATTR InstName R3
SYMATTR Value 47k
SYMBOL ind 640 288 R0
WINDOW 0 -30 46 Left 0
WINDOW 3 -70 73 Left 0
SYMATTR InstName L1
SYMATTR Value 270µ
SYMATTR SpiceLine Ipk=4 Rser=0.1 Rpar=32000 Cpar=1.8p mfg="Gowanda" pn="GT10-110"
SYMBOL nmos 608 448 R0
SYMATTR InstName M1
SYMATTR Value VN2224
SYMBOL polcap 544 384 R0
WINDOW 3 24 64 Left 0
SYMATTR Value 33µ
SYMATTR InstName Cf1
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=305m Rser=0.35 Lser=0 mfg="Nichicon" pn="UPL1J330MPH" type="Al electrolytic"
SYMBOL diode 704 432 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName Dr
SYMATTR Value MURS120
SYMBOL polcap 784 448 R0
WINDOW 0 -46 34 Left 0
WINDOW 3 -29 63 Left 0
SYMATTR InstName Cf2
SYMATTR Value 33µ
SYMATTR Description Capacitor
SYMATTR Type cap
SYMATTR SpiceLine V=63 Irms=305m Rser=0.35 Lser=0 mfg="Nichicon" pn="UPL1J330MPH" type="Al electrolytic"
SYMBOL res -80 384 R0
WINDOW 0 -30 31 Left 0
WINDOW 3 -31 64 Left 0
SYMATTR InstName R2
SYMATTR Value 30k
SYMBOL res 880 432 R0
WINDOW 0 -31 32 Left 0
WINDOW 3 -41 63 Left 0
SYMATTR InstName RL
SYMATTR Value 500
SYMBOL zener 288 208 M90
WINDOW 0 42 -14 VBottom 0
WINDOW 3 15 86 VTop 0
SYMATTR InstName Dz
SYMATTR Value Z50
TEXT -416 576 Left 0 !.tran 0 2m 0 200n startup
TEXT -96 576 Left 0 !.model Z50 D(Is=0.6u Rs=.5 Cjo=100p nbv=7 bv=50 Ibv=1m Vpk=15)