Version 4
SHEET 1 880 680
WIRE -96 -32 -112 -32
WIRE 0 -32 -32 -32
WIRE 80 0 -64 0
WIRE 80 16 80 0
WIRE -64 32 -64 0
WIRE -64 32 -176 32
WIRE 80 32 80 16
WIRE 0 64 0 -32
WIRE 16 64 0 64
WIRE -176 112 -176 96
WIRE -64 112 -64 32
WIRE -112 128 -112 -32
WIRE -96 128 -112 128
WIRE -64 128 -64 112
WIRE 224 128 160 128
WIRE 384 128 288 128
WIRE 416 128 384 128
WIRE -176 144 -176 112
WIRE -160 144 -176 144
WIRE 0 144 0 64
WIRE 0 144 -32 144
WIRE -96 160 -272 160
WIRE 80 176 80 112
WIRE 80 176 48 176
WIRE 128 176 80 176
WIRE 160 176 160 128
WIRE 160 176 128 176
WIRE 416 176 416 128
WIRE -272 192 -272 160
WIRE 160 192 160 176
WIRE 224 208 208 208
WIRE 304 208 288 208
WIRE 48 224 48 176
WIRE 208 224 208 208
WIRE 304 224 304 208
WIRE -160 272 -160 144
WIRE -160 272 -272 272
WIRE 144 272 112 272
WIRE 160 272 144 272
WIRE 416 272 416 256
WIRE 560 272 416 272
WIRE -160 288 -160 272
WIRE -160 288 -176 288
WIRE 416 288 416 272
WIRE 256 304 208 304
WIRE 304 304 256 304
WIRE 256 320 256 304
WIRE -272 368 -272 272
WIRE -64 368 -64 176
WIRE -64 368 -176 368
WIRE 48 368 48 320
WIRE 48 368 -64 368
WIRE 304 368 304 304
WIRE 416 368 304 368
WIRE 0 416 0 144
WIRE 144 416 144 272
WIRE 144 416 0 416
WIRE -112 480 -112 128
WIRE 560 480 560 272
WIRE 560 480 -112 480
FLAG 256 320 0
FLAG -272 368 0
FLAG 128 176 Vtrin
FLAG 384 128 Vtrout
SYMBOL res 288 208 R0
SYMATTR InstName R1
SYMATTR Value 50
SYMBOL res 192 208 R0
SYMATTR InstName R2
SYMATTR Value 5
SYMBOL voltage -272 176 R0
WINDOW 3 24 44 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value SINE(0 8 50)
SYMBOL res 400 160 R0
SYMATTR InstName R3
SYMATTR Value 100000
SYMBOL ind2 208 112 R0
WINDOW 3 -64 -3 Left 2
SYMATTR InstName L1
SYMATTR Value 0.1
SYMATTR Type ind
SYMBOL ind2 272 112 R0
WINDOW 3 35 -10 Left 2
SYMATTR InstName L2
SYMATTR Value 1000
SYMATTR Type ind
SYMBOL Opamps\\LT1001 -64 80 R0
SYMATTR InstName U1
SYMBOL voltage -176 16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 12
SYMBOL voltage -176 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL npn 16 16 R0
SYMATTR InstName Q1
SYMATTR Value 2SCR512P
SYMBOL pnp 112 320 R180
WINDOW 0 34 47 Left 2
WINDOW 3 -19 -69 Left 2
SYMATTR InstName Q2
SYMATTR Value 2SAR512P
SYMBOL res 400 272 R0
SYMATTR InstName R4
SYMATTR Value 3000
SYMBOL cap -32 -48 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 -21 -8 VTop 2
SYMATTR InstName C1
SYMATTR Value 0.5n
SYMBOL res 144 176 R0
WINDOW 0 -26 28 Left 2
WINDOW 3 -27 63 Left 2
SYMATTR InstName R5
SYMATTR Value 50
TEXT 192 72 Left 2 !K1 L1 L2 0.7
TEXT -288 528 Left 2 !.tran 0 0.1 0 0.0001