Version 4 SHEET 1 880 680 WIRE -64 -208 -176 -208 WIRE 128 -208 -64 -208 WIRE 208 -208 128 -208 WIRE 320 -208 208 -208 WIRE 128 -192 128 -208 WIRE 208 -144 208 -208 WIRE 320 -128 320 -208 WIRE 128 -96 128 -128 WIRE 128 -96 64 -96 WIRE 144 -96 128 -96 WIRE 64 -80 64 -96 WIRE 128 -80 128 -96 WIRE -64 -64 -64 -208 WIRE -176 -48 -176 -208 WIRE 208 -32 208 -48 WIRE 320 16 320 -48 WIRE 320 16 288 16 WIRE 352 16 320 16 WIRE 688 16 672 16 WIRE 208 64 208 48 WIRE 224 64 208 64 WIRE 128 80 128 -16 WIRE 208 80 208 64 WIRE -176 128 -176 32 WIRE -64 128 -64 0 WIRE 64 128 64 0 WIRE 288 128 288 112 WIRE 688 128 688 16 WIRE 208 176 208 160 WIRE 128 224 128 160 WIRE 320 224 320 16 WIRE 320 224 128 224 FLAG 288 128 0 FLAG 64 128 0 FLAG -176 128 0 FLAG 208 176 0 FLAG -64 128 0 FLAG 688 128 0 SYMBOL npn 224 16 R0 SYMATTR InstName Q1 SYMATTR Value BC547B SYMBOL pnp 144 -48 M180 SYMATTR InstName Q2 SYMATTR Value BC557B SYMBOL res 192 -48 R0 SYMATTR InstName R1 SYMATTR Value 4700R SYMBOL diode 352 32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMBOL ind 304 -144 R0 SYMATTR InstName L1 SYMATTR Value 1mH SYMBOL cap 112 -80 R0 WINDOW 0 24 53 Left 0 WINDOW 3 23 78 Left 0 SYMATTR InstName C2 SYMATTR Value 100n SYMBOL res 48 -96 R0 WINDOW 0 -32 34 Left 0 WINDOW 3 -66 61 Left 0 SYMATTR InstName R3 SYMATTR Value 100k SYMBOL voltage -176 -64 R0 WINDOW 123 0 0 Left 0 WINDOW 39 24 132 Left 0 SYMATTR SpiceLine Rser=1 SYMATTR InstName V1 SYMATTR Value 1.5V SYMBOL diode 144 -128 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL res 192 64 R0 SYMATTR InstName R2 SYMATTR Value 47k SYMBOL res 112 64 R0 SYMATTR InstName R4 SYMATTR Value 10k SYMBOL cap -80 -64 R0 SYMATTR InstName C3 SYMATTR Value 100µ SYMBOL diode 416 32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D3 SYMATTR Value 1N4148 SYMBOL diode 480 32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D4 SYMATTR Value 1N4148 SYMBOL diode 544 32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D5 SYMATTR Value 1N4148 SYMBOL diode 608 32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D6 SYMATTR Value 1N4148 TEXT -112 184 Left 0 !.tran 0 1ms 0 10ns