Version 4
Inverter
SHEET 1 880 688
WIRE -32 64 -128 64
WIRE 144 64 48 64
WIRE 240 64 144 64
WIRE 368 64 240 64
WIRE 528 128 448 128
WIRE 144 144 144 64
WIRE 80 192 -80 192
WIRE 368 256 368 64
WIRE 448 256 448 128
WIRE -80 288 -80 192
WIRE -48 288 -80 288
WIRE 144 288 144 240
WIRE 144 288 32 288
WIRE 240 288 240 64
WIRE 448 384 448 336
WIRE 608 384 448 384
WIRE -128 448 -128 64
WIRE -48 448 -128 448
WIRE 144 448 144 288
WIRE 144 448 32 448
WIRE 240 448 240 368
WIRE 240 448 144 448
WIRE 240 480 240 448
WIRE 144 512 144 448
WIRE -128 560 -128 448
WIRE 80 560 -128 560
WIRE -80 640 -80 288
WIRE -48 640 -80 640
WIRE 144 640 144 608
WIRE 144 640 32 640
WIRE 368 640 368 336
WIRE 368 640 144 640
FLAG 608 384 0
FLAG 240 480 0
SYMBOL res 64 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 100
SYMBOL res 48 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 15
SYMBOL res 48 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 15
SYMBOL res 48 624 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL npn 80 144 R0
SYMATTR InstName Q1
SYMATTR Value 2N3055
SYMBOL npn 80 608 M180
SYMATTR InstName Q2
SYMBOL ind 352 240 R0
WINDOW 0 7 -10 Left 2
WINDOW 3 6 125 Left 2
SYMATTR InstName L1
SYMBOL ind 464 240 M0
WINDOW 0 2 -8 Left 2
WINDOW 3 6 125 Left 2
SYMATTR InstName L2
SYMBOL res 624 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1
SYMBOL Misc\\battery 240 272 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12