Version 4
SHEET 1 880 760
WIRE 192 64 160 64
WIRE 304 64 272 64
WIRE 448 64 304 64
WIRE 160 80 160 64
WIRE 304 96 304 64
WIRE -128 176 -192 176
WIRE 16 176 -48 176
WIRE 112 176 16 176
WIRE 160 176 160 160
WIRE 304 176 304 160
WIRE 304 176 160 176
WIRE 112 192 112 176
WIRE -192 224 -192 176
WIRE -192 224 -400 224
WIRE 160 224 160 176
WIRE 208 224 160 224
WIRE 304 224 288 224
WIRE -400 256 -400 224
WIRE 160 272 160 224
WIRE 304 272 160 272
WIRE -192 288 -192 224
WIRE 112 288 112 272
WIRE 112 288 -192 288
WIRE 160 288 160 272
WIRE 304 304 304 272
WIRE -400 352 -400 336
WIRE -64 384 -64 368
WIRE -64 384 -192 384
WIRE 16 384 -64 384
WIRE 160 384 160 368
WIRE 192 384 160 384
WIRE 304 384 304 368
WIRE 304 384 272 384
WIRE 16 416 16 384
WIRE 304 432 304 384
WIRE 304 432 112 432
WIRE 112 448 112 432
WIRE 448 464 448 64
WIRE 448 464 240 464
WIRE -192 512 -192 384
WIRE 16 512 16 496
WIRE 112 512 16 512
WIRE 176 512 112 512
WIRE 16 560 16 512
WIRE 240 592 240 560
WIRE -192 704 -192 592
WIRE 16 704 16 640
WIRE 16 704 -192 704
WIRE 128 704 16 704
WIRE 240 704 240 672
WIRE 240 704 128 704
WIRE 256 704 240 704
WIRE 128 720 128 704
FLAG 128 720 0
FLAG 304 224 Vcc
FLAG -64 368 Vcc
FLAG -400 352 0
FLAG 16 176 Vo
SYMBOL ind2 96 288 M180
WINDOW 0 -15 80 Right 0
WINDOW 3 -7 42 Right 0
SYMATTR InstName L1
SYMATTR Value 10m
SYMATTR Type ind
SYMBOL ind2 176 64 M0
WINDOW 0 -29 49 Left 0
WINDOW 3 -44 80 Left 0
SYMATTR InstName L2
SYMATTR Value 50µ
SYMATTR Type ind
SYMBOL res -32 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL ind2 176 272 M0
WINDOW 0 -29 40 Left 0
WINDOW 3 -39 68 Left 0
SYMATTR InstName L3
SYMATTR Value 50µ
SYMATTR Type ind
SYMBOL npn2 176 464 R0
SYMATTR InstName Q1
SYMATTR Value 2N2222
SYMBOL voltage -192 496 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -416 240 R0
SYMATTR InstName R3
SYMATTR Value 100000k
SYMBOL res 224 576 R0
SYMATTR InstName R4
SYMATTR Value .1
SYMBOL res 288 48 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R5
SYMATTR Value 4
SYMBOL res 288 368 R90
WINDOW 0 53 93 VBottom 0
WINDOW 3 28 54 VTop 0
SYMATTR InstName R6
SYMATTR Value 4
SYMBOL res 304 208 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R2
SYMATTR Value 1
SYMBOL cap 288 96 R0
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL cap 288 304 R0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL res 0 400 R0
SYMATTR InstName R7
SYMATTR Value 100k
SYMBOL res 0 544 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap 96 448 R0
SYMATTR InstName C3
SYMATTR Value 1n
TEXT -40 56 Left 0 !K L1 L2 L3 0.999
TEXT -40 24 Left 0 ;A transformer with three windings
TEXT -224 744 Left 0 !.tran 1m