Version 4
SHEET 1 1608 868
WIRE 432 -64 208 -64
WIRE 480 -64 432 -64
WIRE 592 -64 560 -64
WIRE 208 -32 208 -64
WIRE 432 -32 432 -64
WIRE 112 80 96 80
WIRE 208 80 208 48
WIRE 208 80 192 80
WIRE 336 80 320 80
WIRE 432 80 432 48
WIRE 432 80 416 80
WIRE 480 80 432 80
WIRE 592 80 544 80
WIRE 208 128 208 80
WIRE 240 128 208 128
WIRE 320 128 320 80
WIRE 320 128 304 128
WIRE 432 128 432 80
WIRE 592 160 592 80
WIRE -400 176 -448 176
WIRE -272 176 -320 176
WIRE -128 176 -208 176
WIRE -96 176 -128 176
WIRE -48 176 -96 176
WIRE 0 176 -48 176
WIRE 96 176 96 80
WIRE 96 176 64 176
WIRE 144 176 96 176
WIRE 320 176 320 128
WIRE 368 176 320 176
WIRE -448 208 -448 176
WIRE -272 208 -272 176
WIRE -208 208 -208 176
WIRE -128 208 -128 176
WIRE -48 224 -48 176
WIRE 208 240 208 224
WIRE 432 240 432 224
WIRE -448 320 -448 288
WIRE -272 320 -272 288
WIRE -272 320 -448 320
WIRE -208 320 -208 288
WIRE -208 320 -272 320
WIRE -128 320 -128 288
WIRE -128 320 -208 320
WIRE -48 320 -48 288
WIRE -48 320 -128 320
WIRE 208 320 -48 320
WIRE 432 320 208 320
WIRE 592 320 592 240
WIRE 592 320 432 320
WIRE -448 336 -448 320
FLAG 592 -64 0
FLAG -448 336 0
FLAG -96 176 in
SYMBOL npn2 144 128 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL npn2 368 128 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL cap 0 192 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C2
SYMATTR Value 100n
SYMBOL cap 240 144 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C3
SYMATTR Value 100n
SYMBOL cap 480 96 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL res 192 -48 R0
SYMATTR InstName R1
SYMATTR Value 820
SYMBOL res 96 96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R2
SYMATTR Value 220k
SYMBOL res 320 96 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 0 56 VBottom 0
SYMATTR InstName R3
SYMATTR Value 220k
SYMBOL res 416 -48 R0
SYMATTR InstName R4
SYMATTR Value 820
SYMBOL voltage 464 -64 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 -32 56 VBottom 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL ind2 -288 192 R0
WINDOW 0 -36 31 Left 0
WINDOW 3 -55 75 Left 0
SYMATTR InstName L1
SYMATTR Value 150µ
SYMATTR Type ind
SYMBOL ind2 -192 304 R180
WINDOW 0 -31 74 Left 0
WINDOW 3 -45 37 Left 0
SYMATTR InstName L2
SYMATTR Value 150µ
SYMATTR Type ind
SYMBOL res -144 192 R0
SYMATTR InstName R5
SYMATTR Value 50k
SYMBOL voltage -448 192 R0
WINDOW 0 -59 75 Left 0
WINDOW 3 -59 106 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value SINE(0 0.78 160k)
SYMATTR Value2 AC 1.12
SYMBOL res -304 160 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 1
SYMBOL res 576 144 R0
SYMATTR InstName R7
SYMATTR Value 500
SYMBOL res 192 224 R0
SYMATTR InstName R16
SYMATTR Value 12
SYMBOL res 416 224 R0
SYMATTR InstName R17
SYMATTR Value 4.7
SYMBOL cap -64 224 R0
SYMATTR InstName C1
SYMATTR Value 10p
TEXT -504 -72 Left 0 !;tran 0 110u 10u 10n
TEXT -312 152 Left 0 !K1 L1 L2 120u
TEXT -504 -40 Left 0 !.ac dec 2000 100k 3Meg