Version 4 SHEET 1 2900 1300 WIRE 2080 976 1968 976 WIRE 2192 976 2080 976 WIRE 2320 976 2288 976 WIRE 2368 976 2320 976 WIRE 2496 976 2448 976 WIRE 2608 976 2496 976 WIRE 1968 992 1968 976 WIRE 2080 992 2080 976 WIRE 2608 992 2608 976 WIRE 2320 1008 2320 976 WIRE 2496 1008 2496 976 WIRE 2080 1088 2080 1072 WIRE 2144 1088 2080 1088 WIRE 2240 1088 2240 1040 WIRE 2240 1088 2224 1088 WIRE 2320 1088 2320 1072 WIRE 2496 1088 2496 1072 WIRE 2608 1088 2608 1072 WIRE 1968 1104 1968 1072 FLAG 1968 1104 0 FLAG 2320 1088 0 FLAG 2496 1088 0 FLAG 2608 1088 0 FLAG 2608 976 OUT FLAG 1968 976 IN FLAG 2320 976 SW SYMBOL VOLTAGE 1968 976 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL schottky 2304 1072 M180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D1 SYMATTR Value 1N5818 SYMBOL ind 2352 992 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 -1 58 VBottom 0 SYMATTR InstName L1 SYMATTR Value 22µ SYMATTR SpiceLine Rpar=1G SYMBOL cap 2480 1008 R0 WINDOW 123 31 81 Left 0 WINDOW 3 30 56 Left 0 SYMATTR Value 47µ SYMATTR InstName C1 SYMBOL res 2592 976 R0 SYMATTR InstName Rload SYMATTR Value 10 SYMBOL pnp 2288 1040 M270 WINDOW 0 79 61 Left 0 WINDOW 3 64 29 Left 0 SYMATTR InstName Q1 SYMBOL res 2240 1072 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 450 SYMBOL PWM 2080 1024 R0 WINDOW 39 -85 -80 Left 0 SYMATTR SpiceLine A=5 T1=2u T2=1m SYMATTR InstName X1 TEXT 2328 1128 Left 0 !.tran 0 1m 0 0.01u startup