Version 4
SHEET 1 880 680
WIRE -384 -352 -448 -352
WIRE -256 -352 -304 -352
WIRE -128 -352 -176 -352
WIRE -48 -352 -128 -352
WIRE 0 -352 -48 -352
WIRE 128 -352 0 -352
WIRE 192 -352 128 -352
WIRE 288 -352 256 -352
WIRE 128 -320 128 -352
WIRE -48 -304 -48 -352
WIRE 0 -304 0 -352
WIRE -128 -288 -128 -352
WIRE 224 -272 192 -272
WIRE -48 -176 -48 -240
WIRE 0 -176 0 -224
WIRE 0 -176 -48 -176
WIRE 128 -176 128 -224
WIRE 128 -176 0 -176
WIRE 240 -176 128 -176
WIRE 352 -176 304 -176
WIRE 384 -176 352 -176
WIRE 0 -144 0 -176
WIRE 384 -144 384 -176
WIRE 224 -112 224 -272
WIRE -224 -96 -240 -96
WIRE -128 -96 -128 -208
WIRE -128 -96 -160 -96
WIRE -64 -96 -128 -96
WIRE -128 -64 -128 -96
WIRE 384 -32 384 -64
WIRE 0 0 0 -48
WIRE 224 0 224 -32
WIRE -544 48 -576 48
WIRE -496 48 -544 48
WIRE -368 48 -416 48
WIRE -320 48 -368 48
WIRE -128 48 -128 16
WIRE -128 48 -256 48
WIRE -64 48 -128 48
WIRE -576 80 -576 48
WIRE -128 96 -128 48
WIRE 0 112 0 96
WIRE -576 208 -576 160
WIRE -128 208 -128 176
WIRE 0 208 0 192
WIRE 224 208 224 80
FLAG 0 208 0
FLAG -128 208 0
FLAG -448 -352 0
FLAG -576 208 0
FLAG 384 -32 0
FLAG -368 48 in1
FLAG 352 -176 out1
FLAG -544 48 src
FLAG 288 -352 0
FLAG -240 -96 0
FLAG 224 208 0
SYMBOL cap -320 64 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C1
SYMATTR Value 100n
SYMBOL npn -64 -144 R0
SYMATTR InstName Q1
SYMATTR Value BC547C
SYMBOL cap 240 -160 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 220n
SYMBOL Misc\\EuropeanResistor -112 -304 M0
SYMATTR InstName R2
SYMATTR Value 22k
SYMBOL npn -64 0 R0
SYMATTR InstName Q2
SYMATTR Value BC547C
SYMBOL Misc\\EuropeanResistor -112 -80 M0
SYMATTR InstName R4
SYMATTR Value 39k
SYMBOL Misc\\EuropeanResistor -112 80 M0
SYMATTR InstName R5
SYMATTR Value 8.2k
SYMBOL Misc\\battery -288 -352 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 9V
SYMBOL voltage -576 64 R0
WINDOW 123 -94 72 Left 2
WINDOW 39 0 0 Left 2
WINDOW 3 -100 111 Left 2
WINDOW 0 -81 32 Left 2
SYMATTR Value2 AC 2
SYMATTR Value SINE(0 2m 493k)
SYMATTR InstName V2
SYMBOL Misc\\EuropeanResistor -512 64 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 3.5k
SYMBOL Misc\\EuropeanResistor 368 -160 R0
SYMATTR InstName R7
SYMATTR Value 50k
SYMBOL ind -16 -320 R0
WINDOW 0 36 79 Left 2
WINDOW 3 25 109 Left 2
SYMATTR InstName L1
SYMATTR Value 103.5µ
SYMATTR SpiceLine Rser=3 Rpar=50k
SYMBOL cap -32 -304 M0
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL Misc\\EuropeanResistor -160 -368 R90
WINDOW 0 5 56 VBottom 2
WINDOW 3 27 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 470
SYMBOL cap 256 -368 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 100n
SYMBOL cap -160 -112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 10n
SYMBOL Misc\\EuropeanResistor 16 96 M0
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL pnp 192 -224 R180
WINDOW 0 73 18 Left 2
WINDOW 3 30 46 Left 2
SYMATTR InstName Q3
SYMATTR Value BC557C
SYMBOL Misc\\EuropeanResistor 208 -128 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL current 224 0 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value {i_var}
TEXT -560 -208 Left 2 !.ac lin 10k 440k 550k
TEXT -560 -240 Left 2 !;tran 0 200m 0 10n
TEXT 80 144 Left 2 !.step param i_var list 100p 1u 10u 100u 1m
TEXT 80 176 Left 2 !;.param i_var=200u