Version 4
SHEET 1 1340 680
WIRE 384 -96 368 -96
WIRE 480 -96 464 -96
WIRE 512 -96 480 -96
WIRE 688 -96 592 -96
WIRE 1120 -96 688 -96
WIRE 688 -32 688 -96
WIRE 1120 0 1120 -96
WIRE 480 16 480 -96
WIRE 576 16 480 16
WIRE 624 16 576 16
WIRE 480 80 480 16
WIRE 576 80 576 16
WIRE 592 80 576 80
WIRE 688 80 688 64
WIRE 688 80 656 80
WIRE 208 128 -80 128
WIRE 368 128 368 -96
WIRE 368 128 272 128
WIRE 416 128 368 128
WIRE -160 176 -240 176
WIRE 688 176 688 80
WIRE 688 176 480 176
WIRE 752 176 688 176
WIRE 864 176 832 176
WIRE 976 176 864 176
WIRE -240 192 -240 176
WIRE 688 192 688 176
WIRE 864 192 864 176
WIRE 976 192 976 176
WIRE 368 208 368 128
WIRE 384 208 368 208
WIRE 480 208 480 176
WIRE 480 208 448 208
WIRE -240 304 -240 272
WIRE -80 304 -80 224
WIRE -80 304 -240 304
WIRE 336 304 -80 304
WIRE 688 304 688 256
WIRE 688 304 336 304
WIRE 864 304 864 256
WIRE 864 304 688 304
WIRE 976 304 976 272
WIRE 976 304 864 304
WIRE 1120 304 1120 80
WIRE 1120 304 976 304
WIRE 336 352 336 304
FLAG 336 352 0
SYMBOL EXTRA\\Philips\\NMOSFET\\BS170PLP -112 176 R0
SYMATTR InstName U1
SYMBOL Robertugo\\Resistor 304 112 R90
WINDOW 0 0 64 VBottom 2
WINDOW 3 33 64 VTop 2
SYMATTR InstName R1
SYMATTR Value 470
SYMBOL pnp 416 176 M180
SYMATTR InstName Q1
SYMATTR Value BC640
SYMBOL pnp 624 64 M180
SYMATTR InstName Q2
SYMATTR Value BD912
SYMBOL res 608 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 22R
SYMBOL schottky 704 256 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind 736 192 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 29µH
SYMATTR SpiceLine Ipk=16
SYMBOL cap 848 192 R0
SYMATTR InstName C1
SYMATTR Value 2200µF
SYMBOL voltage 1120 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=0
SYMATTR InstName V1
SYMATTR Value 24
SYMBOL voltage -240 176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 0 0 1u 18.75u)
SYMBOL res 960 176 R0
SYMATTR InstName R4
SYMATTR Value 8R
SYMBOL res 480 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 470R
SYMBOL schottky 448 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL schottky 656 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N5818
TEXT -272 376 Left 2 !.tran 0 10.1ms 10ms