Version 4 SHEET 1 1252 680 WIRE 720 -560 576 -560 WIRE 816 -560 816 -640 WIRE 816 -560 720 -560 WIRE 896 -560 816 -560 WIRE 1184 -560 1008 -560 WIRE 896 -528 896 -560 WIRE 1008 -528 1008 -560 WIRE 1184 -528 1184 -560 WIRE 720 -512 720 -560 WIRE -304 -480 -304 -512 WIRE 176 -432 176 -480 WIRE 176 -432 128 -432 WIRE 256 -432 176 -432 WIRE 352 -432 256 -432 WIRE 1008 -416 1008 -448 WIRE 1184 -416 1184 -448 WIRE 1184 -416 1008 -416 WIRE 128 -400 128 -432 WIRE 256 -400 256 -432 WIRE 352 -400 352 -432 WIRE 720 -384 720 -448 WIRE 816 -384 720 -384 WIRE 896 -384 896 -448 WIRE 896 -384 816 -384 WIRE -304 -368 -304 -400 WIRE 1184 -368 1184 -416 WIRE 288 -320 256 -320 WIRE 352 -320 352 -336 WIRE 352 -320 288 -320 WIRE 576 -304 576 -560 WIRE 1008 -304 576 -304 WIRE 128 -288 128 -320 WIRE 128 -288 -112 -288 WIRE 624 -240 576 -240 WIRE 736 -240 688 -240 WIRE 32 -224 -32 -224 WIRE 176 -224 96 -224 WIRE 1008 -224 1008 -304 WIRE 288 -192 288 -320 WIRE 816 -192 816 -384 WIRE -112 -144 -112 -288 WIRE -32 -144 -32 -224 WIRE -32 -144 -112 -144 WIRE 16 -144 -32 -144 WIRE 176 -144 176 -224 WIRE 176 -144 96 -144 WIRE 224 -144 176 -144 WIRE 576 -144 576 -240 WIRE 576 -144 528 -144 WIRE 624 -144 576 -144 WIRE 736 -144 736 -240 WIRE 736 -144 704 -144 WIRE 752 -144 736 -144 WIRE 288 -16 288 -96 WIRE 816 -16 816 -96 WIRE 528 48 528 -144 WIRE 1008 48 1008 -144 WIRE 1008 48 528 48 FLAG 288 -16 0 FLAG -304 -368 0 FLAG -304 -512 Vcc FLAG 176 -480 Vcc FLAG 816 -16 0 FLAG 816 -640 Vcc FLAG 1184 -368 0 SYMBOL ind2 272 -416 M0 SYMATTR InstName L1
SYMBOL ind2 144 -304 R180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L2
SYMBOL cap 336 -400 R0 SYMATTR InstName C1
SYMBOL npn 224 -192 R0 SYMATTR InstName Q1 SYMATTR Value 2SCR553P SYMBOL res 112 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 470 SYMBOL cap 96 -240 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2
SYMBOL voltage -304 -496 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL npn 752 -192 R0 SYMATTR InstName Q2 SYMATTR Value 2SCR553P SYMBOL res 720 -160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 2.2k SYMBOL cap 688 -256 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3
SYMBOL ind2 912 -544 M0 SYMATTR InstName L3
SYMBOL ind2 1024 -544 M0 SYMATTR InstName L4
SYMBOL cap 704 -512 R0 SYMATTR InstName C4
SYMBOL ind2 992 -128 M180 WINDOW 0 36 80 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName L5
SYMBOL res 1168 -544 R0 SYMATTR InstName R3 SYMATTR Value 10k TEXT -504 -312 Left 2 !.tran 0.1 startup uic TEXT -504 -272 Left 2 !K L1 L2 0.9 TEXT -512 -240 Left 2 !K L3 L4 L5 0.9