Version 4
SHEET 1 1004 680
WIRE 112 -64 96 -64
WIRE 288 -64 112 -64
WIRE 528 -64 368 -64
WIRE 608 -64 528 -64
WIRE 800 -64 672 -64
WIRE 880 -64 800 -64
WIRE 944 -64 880 -64
WIRE 528 0 528 -64
WIRE 592 16 576 16
WIRE 656 16 592 16
WIRE 96 48 96 -64
WIRE 800 48 800 -64
WIRE 944 48 944 -64
WIRE 576 96 576 64
WIRE 624 96 576 96
WIRE 656 96 624 96
WIRE 96 192 96 128
WIRE 528 192 528 80
WIRE 528 192 96 192
WIRE 624 192 624 96
WIRE 624 192 528 192
WIRE 800 192 800 112
WIRE 800 192 624 192
WIRE 944 192 944 128
WIRE 944 192 800 192
WIRE 96 256 96 192
FLAG 96 256 0
FLAG 112 -64 in
FLAG 880 -64 out
FLAG 592 16 s
FLAG 528 -64 a
SYMBOL voltage 96 32 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL voltage 656 0 R0
WINDOW 0 32 56 VTop 2
WINDOW 3 178 186 Bottom 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PULSE(0 5 0 0 0 0.05m 0.10m)
SYMBOL sw 528 96 R180
SYMATTR InstName S1
SYMBOL cap 784 48 R0
SYMATTR InstName C1
SYMATTR Value 0.010mF
SYMBOL res 928 32 R0
SYMATTR InstName R1
SYMATTR Value 18
SYMBOL diode 608 -48 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMBOL ind 272 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 0.5mH
TEXT 280 240 Left 2 !.Model SW SW(Ron=0.001, Roff=100Meg, Von=5V, Voff=0V)
TEXT 62 280 Left 2 !.tran 0 2ms 0