Version 4 SHEET 1 1176 680 WIRE -48 -48 -144 -48 WIRE 16 -48 -48 -48 WIRE 64 -48 16 -48 WIRE 176 -48 144 -48 WIRE 336 -48 176 -48 WIRE 448 -48 336 -48 WIRE 512 -48 448 -48 WIRE 336 -32 336 -48 WIRE 512 -32 512 -48 WIRE 176 0 176 -48 WIRE -48 16 -48 -48 WIRE 512 48 512 32 WIRE 16 64 16 -48 WIRE 128 64 16 64 WIRE 336 64 336 48 WIRE 336 64 224 64 WIRE 16 80 16 64 WIRE 448 80 448 -48 WIRE -48 112 -48 80 WIRE -144 128 -144 -48 WIRE 224 128 208 128 WIRE 336 128 336 64 WIRE 336 128 304 128 WIRE 384 128 336 128 WIRE 16 176 16 160 WIRE 112 176 16 176 WIRE 144 176 112 176 WIRE 368 224 208 224 WIRE 624 224 368 224 WIRE 688 224 624 224 WIRE 16 288 16 176 WIRE 112 288 112 176 WIRE 208 288 112 288 WIRE 448 288 448 176 WIRE 448 288 272 288 WIRE 496 288 448 288 WIRE 624 288 624 224 WIRE 624 288 576 288 WIRE 688 288 688 224 WIRE -144 336 -144 208 WIRE -112 336 -144 336 WIRE 448 336 448 288 WIRE 624 336 624 288 WIRE -112 352 -112 336 WIRE 112 352 112 288 WIRE 16 368 16 352 WIRE -144 448 -144 336 WIRE 16 448 16 432 WIRE 16 448 -144 448 WIRE 112 448 112 416 WIRE 112 448 16 448 WIRE 448 448 448 400 WIRE 448 448 112 448 WIRE 624 448 624 400 WIRE 624 448 448 448 WIRE 688 448 688 368 WIRE 688 448 624 448 FLAG -112 352 0 FLAG -48 112 0 FLAG 368 224 vout FLAG 512 48 0 SYMBOL npn 144 128 R0 WINDOW 0 -24 28 Left 2 WINDOW 3 29 51 Left 2 SYMATTR InstName Q1 SYMATTR Value BC547B SYMBOL res 0 64 R0 SYMATTR InstName R1 SYMATTR Value 1k5 SYMBOL zener 32 432 R180 WINDOW 0 45 29 Left 2 WINDOW 3 27 3 Left 2 SYMATTR InstName D1 SYMATTR Value ZPD5V1 SYMATTR Description Diode SYMATTR Type diode SYMBOL voltage -144 112 R0 WINDOW 123 0 0 Left 2 WINDOW 39 36 41 Left 2 WINDOW 0 23 10 Left 2 WINDOW 3 45 73 Left 2 SYMATTR SpiceLine Rser=0.1 SYMATTR InstName V1 SYMATTR Value 10V SYMBOL res 320 -48 R0 SYMATTR InstName R2 SYMATTR Value 150 SYMBOL schottky 464 400 R180 WINDOW 0 53 37 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value 1N5819 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 272 272 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 470pF SYMBOL ind 592 272 R90 WINDOW 0 5 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 68µH SYMATTR SpiceLine Ipk=5 Rser=0.03 SYMBOL cap 608 336 R0 WINDOW 0 -44 29 Left 2 WINDOW 3 -57 59 Left 2 SYMATTR InstName C3 SYMATTR Value 47µF SYMBOL res 672 272 R0 SYMATTR InstName Rload SYMATTR Value 25 SYMBOL polcap -64 16 R0 WINDOW 3 -52 -3 Left 2 WINDOW 0 -40 31 Left 2 SYMATTR Value 100µF SYMATTR InstName C1 SYMBOL pnp 384 176 M180 WINDOW 0 29 46 Left 2 WINDOW 3 -62 28 Left 2 SYMATTR InstName Q2 SYMATTR Value BC327 SYMBOL cap 96 352 R0 SYMATTR InstName C6 SYMATTR Value 10nF SYMBOL res 320 112 R90 WINDOW 0 6 56 VBottom 2 WINDOW 3 26 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 330 SYMBOL diode 0 288 R0 WINDOW 0 -34 32 Left 2 WINDOW 3 -73 60 Left 2 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL res 160 -64 R90 WINDOW 0 6 56 VBottom 2 WINDOW 3 26 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 2.2 SYMBOL pnp 224 0 R90 WINDOW 0 41 33 VRight 2 WINDOW 3 30 91 VRight 2 SYMATTR InstName Q3 SYMATTR Value BC556B SYMBOL polcap 496 -32 R0 SYMATTR InstName C4 SYMATTR Value 10µF TEXT 472 136 Left 2 !.tran 2ms startup