Version 4
SHEET 1 2440 800
WIRE 256 -128 128 -128
WIRE 624 -128 256 -128
WIRE 1216 -128 624 -128
WIRE 1392 -128 1216 -128
WIRE 1216 -64 1216 -128
WIRE 256 -16 256 -128
WIRE 624 -16 624 -128
WIRE 384 32 320 32
WIRE 560 32 384 32
WIRE 1216 64 1216 16
WIRE -192 96 -432 96
WIRE 624 112 624 80
WIRE 928 112 624 112
WIRE 1152 112 928 112
WIRE -64 144 -128 144
WIRE 32 144 -64 144
WIRE 256 160 256 80
WIRE 384 160 384 32
WIRE 384 160 256 160
WIRE -240 176 -432 176
WIRE -192 176 -240 176
WIRE -240 256 -240 176
WIRE -192 256 -240 256
WIRE -64 256 -64 144
WIRE -64 256 -112 256
WIRE -240 288 -240 256
WIRE 928 288 928 112
WIRE 1008 288 928 288
WIRE 1216 288 1216 160
WIRE 1216 288 1072 288
WIRE 1312 288 1216 288
WIRE 256 320 256 160
WIRE 624 320 624 112
WIRE 192 368 112 368
WIRE 768 368 688 368
WIRE 256 464 256 416
WIRE 464 464 256 464
WIRE 624 464 624 416
WIRE 624 464 464 464
WIRE -384 544 -384 512
WIRE -272 544 -272 512
WIRE -176 544 -176 512
WIRE 464 544 464 464
WIRE 1216 592 1216 288
WIRE -384 656 -384 624
WIRE -272 656 -272 624
WIRE -272 656 -384 656
WIRE -224 656 -272 656
WIRE -176 656 -176 624
WIRE -176 656 -224 656
WIRE -224 688 -224 656
WIRE 464 736 464 624
WIRE 464 736 128 736
WIRE 1216 736 1216 672
WIRE 1216 736 464 736
WIRE 1392 736 1216 736
FLAG 128 -128 +Vcc
FLAG 128 736 -Vee
FLAG 768 368 in+
FLAG -192 176 in-
FLAG -224 688 0
FLAG -272 512 +Vcc
FLAG -176 512 -Vee
FLAG -384 512 Vin
FLAG 112 368 in-
FLAG -192 96 in+
FLAG 1312 288 out
FLAG 32 144 out
FLAG -432 96 Vin
FLAG -240 368 0
SYMBOL npn 192 320 R0
WINDOW 0 33 53 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 688 320 M0
WINDOW 0 35 50 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL voltage -176 528 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value -15V
SYMBOL voltage -272 528 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value +15V
SYMBOL voltage -384 528 R0
WINDOW 3 24 44 Left 0
WINDOW 39 0 0 Left 0
SYMATTR Value SINE(0 1V 1kHz)
SYMATTR InstName V3
SYMATTR Value2 AC 1.0
SYMBOL pnp 560 80 M180
WINDOW 3 84 68 Invisible 0
SYMATTR Value 2N3906
SYMATTR InstName Q5
SYMBOL pnp 320 80 R180
WINDOW 3 84 68 Invisible 0
SYMATTR Value 2N3906
SYMATTR InstName Q4
SYMBOL pnp 1152 160 M180
WINDOW 3 84 68 Invisible 0
SYMATTR Value 2N3906
SYMATTR InstName Q7
SYMBOL res 1200 -80 R0
SYMATTR InstName R4
SYMATTR Value 100
SYMBOL res 1200 576 R0
SYMATTR InstName R5
SYMATTR Value 3.3K
SYMBOL res -96 240 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R6
SYMATTR Value 90K
SYMBOL res -224 384 R180
WINDOW 0 36 76 Left 0
WINDOW 3 36 40 Left 0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL cap 1072 272 R90
WINDOW 0 0 32 VBottom 0
WINDOW 3 32 32 VTop 0
SYMATTR InstName Ccomp
SYMATTR Value 1nF
SYMBOL res 448 528 R0
SYMATTR InstName R8
SYMATTR Value 75K
TEXT -416 784 Left 0 !.ac dec 10 1 1e6