Version 4 SHEET 1 880 680 WIRE 576 -144 80 -144 WIRE 368 16 272 16 WIRE 80 64 80 -144 WIRE 128 64 80 64 WIRE 272 64 272 16 WIRE 272 64 208 64 WIRE 576 112 576 -144 WIRE 368 128 368 96 WIRE 128 160 64 160 WIRE 272 160 208 160 WIRE -128 208 -208 208 WIRE 0 208 -48 208 WIRE 272 208 272 160 WIRE 368 208 368 192 WIRE 368 208 272 208 WIRE -208 240 -208 208 WIRE -208 384 -208 320 WIRE 64 384 64 256 WIRE 64 384 -208 384 WIRE 368 384 64 384 WIRE 576 384 576 192 WIRE 576 384 368 384 WIRE 368 432 368 384 FLAG 368 432 0 SYMBOL ind2 224 48 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L1 SYMATTR Value 500µ SYMBOL ind2 224 144 R90 WINDOW 0 4 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName L2 SYMATTR Value 500µ SYMBOL res 352 0 R0 SYMATTR InstName R1 SYMATTR Value 4300 SYMBOL diode 352 128 R0 SYMATTR InstName D1 SYMBOL npn2 0 160 R0 SYMATTR InstName Q1 SYMBOL voltage 576 96 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 24 SYMBOL current -208 320 R180 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName I1 SYMATTR Value PULSE(0 5m 0 0 0 1m 2m 2) SYMBOL res -32 192 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1000 TEXT -168 -272 Left 2 !K L1 L2 1 TEXT 184 -232 Left 2 !.tran 0 2.2m 0 0.000001m