Version 4
SHEET 1 956 680
WIRE 608 -272 304 -272
WIRE 896 -272 608 -272
WIRE 304 -208 304 -272
WIRE 608 -208 608 -272
WIRE 896 -176 896 -272
WIRE 304 -96 304 -128
WIRE 304 -96 192 -96
WIRE 368 -96 304 -96
WIRE 608 -96 608 -128
WIRE 608 -96 496 -96
WIRE 672 -96 608 -96
WIRE 752 -96 736 -96
WIRE 304 -48 304 -96
WIRE 608 -48 608 -96
WIRE 432 -16 432 -96
WIRE 752 -16 752 -96
WIRE 192 16 192 -96
WIRE 496 16 496 -96
WIRE 304 96 304 32
WIRE 352 96 304 96
WIRE 608 96 608 32
WIRE 752 96 608 96
WIRE 832 96 816 96
WIRE 64 144 -16 144
WIRE 80 144 64 144
WIRE 192 144 192 96
WIRE 192 144 144 144
WIRE 240 144 192 144
WIRE 352 144 352 96
WIRE 400 144 352 144
WIRE 496 144 496 96
WIRE 496 144 464 144
WIRE 544 144 496 144
WIRE 832 192 832 96
WIRE -16 208 -16 144
WIRE 64 224 64 144
WIRE 304 256 304 192
WIRE 304 256 224 256
WIRE 608 256 608 192
WIRE 608 256 544 256
WIRE -16 368 -16 288
WIRE 64 368 64 304
WIRE 64 368 -16 368
WIRE 224 368 224 320
WIRE 224 368 64 368
WIRE 304 368 304 336
WIRE 304 368 224 368
WIRE 544 368 544 320
WIRE 544 368 304 368
WIRE 608 368 608 336
WIRE 608 368 544 368
WIRE 832 368 832 272
WIRE 832 368 608 368
WIRE 896 368 896 -96
WIRE 896 368 832 368
WIRE 224 384 224 368
FLAG 432 -16 0
FLAG 752 -16 0
FLAG 224 384 0
FLAG 832 96 AC2
SYMBOL res 176 0 R0
SYMATTR InstName R1
SYMATTR Value 120k
SYMATTR SpiceLine pwr=0.5
SYMBOL res 288 -64 R0
SYMATTR InstName R2
SYMATTR Value 330R
SYMBOL res 288 240 R0
SYMATTR InstName R3
SYMATTR Value 220R
SYMATTR SpiceLine pwr=0.5
SYMBOL res 480 0 R0
SYMATTR InstName R4
SYMATTR Value 120k
SYMBOL res 592 -64 R0
SYMATTR InstName R5
SYMATTR Value 330R
SYMBOL res 592 240 R0
SYMATTR InstName R6
SYMATTR Value 220R
SYMATTR SpiceLine pwr=0.58
SYMBOL res 288 -224 R0
WINDOW 0 35 20 Left 0
WINDOW 3 36 53 Left 0
SYMATTR InstName R7
SYMATTR Value 100R
SYMBOL res 592 -224 R0
SYMATTR InstName R8
SYMATTR Value 100R
SYMATTR SpiceLine pwr=0.5
SYMBOL npn 240 96 R0
SYMATTR InstName Q1
SYMATTR Value Q2N2857
SYMBOL npn 544 96 R0
SYMATTR InstName Q2
SYMATTR Value Q2N2857
SYMBOL cap 144 128 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL cap 208 256 R0
SYMATTR InstName C2
SYMATTR Value 470n
SYMBOL cap 368 -80 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C3
SYMATTR Value 470n
SYMATTR SpiceLine V=50
SYMBOL cap 464 128 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName C4
SYMATTR Value 47n
SYMBOL cap 560 320 R180
WINDOW 0 24 64 Left 0
WINDOW 3 24 8 Left 0
SYMATTR InstName C5
SYMATTR Value 470n
SYMBOL cap 672 -80 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C6
SYMATTR Value 470n
SYMATTR SpiceLine V=50
SYMBOL cap 752 112 R270
WINDOW 0 32 32 VTop 0
WINDOW 3 0 32 VBottom 0
SYMATTR InstName C7
SYMATTR Value 47n
SYMBOL voltage 896 -192 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 8V
SYMBOL res 48 208 R0
SYMATTR InstName R9
SYMATTR Value 1k
SYMBOL Misc\\signal -16 192 R0
WINDOW 3 -205 -96 Left 0
WINDOW 123 -205 -68 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(0 0.01V 100K 0 0 0 20)
SYMATTR Value2 AC 0.01V 0
SYMATTR InstName V1
SYMBOL res 816 176 R0
SYMATTR InstName R10
SYMATTR Value 1500R
TEXT -144 408 Left 0 !;op
TEXT -152 432 Left 0 !;ac dec 10 10k 50Meg
TEXT -184 -232 Left 0 !.noise AC2 V1 dec 10 100k 30Meg