Version 4
SHEET 1 2020 800
WIRE 272 -160 224 -160
WIRE 592 -160 272 -160
WIRE 848 -160 592 -160
WIRE 1136 -160 848 -160
WIRE 1392 -160 1136 -160
WIRE 272 -96 272 -160
WIRE 592 -96 592 -160
WIRE 848 -96 848 -160
WIRE 1136 -96 1136 -160
WIRE 352 -48 336 -48
WIRE 528 -48 352 -48
WIRE 928 -48 912 -48
WIRE 1072 -48 928 -48
WIRE 1392 -32 1392 -160
WIRE 1856 -16 1824 -16
WIRE 1984 -16 1936 -16
WIRE 1136 16 1136 0
WIRE 1248 16 1136 16
WIRE 1328 16 1248 16
WIRE 272 32 272 0
WIRE 272 32 128 32
WIRE 352 32 352 -48
WIRE 352 32 272 32
WIRE 384 32 352 32
WIRE 848 32 848 0
WIRE 928 32 928 -48
WIRE 928 32 848 32
WIRE 1056 32 976 32
WIRE 1136 32 1136 16
WIRE 1136 32 1056 32
WIRE 1056 64 1056 32
WIRE 1248 64 1248 16
WIRE 128 80 128 32
WIRE 384 80 384 32
WIRE 1392 112 1392 64
WIRE 1392 112 1312 112
WIRE 64 128 32 128
WIRE 480 128 448 128
WIRE 1696 128 1664 128
WIRE 1824 128 1824 -16
WIRE 1824 128 1776 128
WIRE 1904 128 1824 128
WIRE 1392 144 1392 112
WIRE 1136 160 1136 32
WIRE 976 176 976 32
WIRE 1984 176 1984 -16
WIRE 1984 176 1968 176
WIRE 2016 176 1984 176
WIRE 128 208 128 176
WIRE 384 208 384 176
WIRE 848 208 848 32
WIRE 1056 208 1056 144
WIRE 1072 208 1056 208
WIRE 1904 208 1776 208
WIRE 1248 240 1248 160
WIRE 1392 240 1392 224
WIRE 1392 240 1248 240
WIRE 288 256 192 256
WIRE 320 256 288 256
WIRE 1056 256 1056 208
WIRE 1392 256 1392 240
WIRE 1520 256 1392 256
WIRE 1776 272 1776 208
WIRE 1392 288 1392 256
WIRE 224 336 224 -160
WIRE 288 336 288 256
WIRE 592 336 592 0
WIRE 592 336 288 336
WIRE 1056 352 1056 336
WIRE 1136 352 1136 256
WIRE 1136 352 1056 352
WIRE 128 384 128 304
WIRE 160 384 128 384
WIRE 384 384 384 304
WIRE 976 384 976 240
WIRE 976 384 384 384
WIRE 1056 416 1056 352
WIRE 1392 416 1392 368
WIRE 128 448 128 384
WIRE 384 448 384 384
WIRE 976 464 976 384
WIRE 992 464 976 464
WIRE 1136 464 1136 352
WIRE 1328 464 1136 464
WIRE 848 480 848 288
WIRE 848 480 768 480
WIRE 224 496 224 432
WIRE 224 496 192 496
WIRE 272 496 224 496
WIRE 320 496 272 496
WIRE 592 512 592 336
WIRE 848 512 848 480
WIRE 1136 512 1136 464
WIRE -384 544 -384 512
WIRE -272 544 -272 512
WIRE -176 544 -176 512
WIRE 768 560 768 480
WIRE 768 560 656 560
WIRE 784 560 768 560
WIRE 1056 560 1056 512
WIRE 1072 560 1056 560
WIRE 976 576 976 464
WIRE 128 608 128 544
WIRE 272 608 272 496
WIRE 384 608 384 544
WIRE 1136 624 1136 608
WIRE 1136 624 1040 624
WIRE 592 640 592 608
WIRE 1056 640 1056 560
WIRE 1136 640 1136 624
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 128 736 128 688
WIRE 272 736 272 688
WIRE 272 736 128 736
WIRE 384 736 384 688
WIRE 384 736 272 736
WIRE 592 736 592 720
WIRE 592 736 384 736
WIRE 848 736 848 608
WIRE 848 736 592 736
WIRE 976 736 976 672
WIRE 976 736 848 736
WIRE 1056 736 1056 720
WIRE 1056 736 976 736
WIRE 1136 736 1136 720
WIRE 1136 736 1056 736
WIRE 1392 736 1392 512
WIRE 1392 736 1136 736
FLAG 1520 256 out
FLAG 1392 -160 +Vcc
FLAG 1392 736 -Vee
FLAG 32 128 in+
FLAG 480 128 in-
FLAG -224 688 0
FLAG -272 512 +Vcc
FLAG -176 512 -Vee
FLAG -384 512 Vin
FLAG 1904 128 in-
FLAG 1904 208 in+
FLAG 1968 176 out
FLAG 1776 272 0
FLAG 1664 128 Vin
SYMBOL npn 64 80 R0
WINDOW 0 31 51 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q1
SYMATTR Value 2N3904
SYMBOL npn 448 80 M0
WINDOW 0 35 50 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q2
SYMATTR Value 2N3904
SYMBOL pnp 192 304 R180
WINDOW 0 34 42 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q3
SYMATTR Value 2N3906
SYMBOL pnp 320 304 M180
WINDOW 0 47 41 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q4
SYMATTR Value 2N3906
SYMBOL npn 192 448 M0
WINDOW 0 42 48 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q5
SYMATTR Value 2N3904
SYMBOL npn 320 448 R0
WINDOW 0 45 51 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q6
SYMATTR Value 2N3904
SYMBOL npn 160 336 R0
WINDOW 3 56 68 Invisible 0
SYMATTR Value 2N3904
SYMATTR InstName Q7
SYMBOL res 112 592 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 39 60 Left 0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL res 368 592 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 36 66 Left 0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL res 256 592 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 38 58 Left 0
SYMATTR InstName R3
SYMATTR Value 50K
SYMBOL pnp 336 0 R180
WINDOW 0 33 46 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q8
SYMATTR Value 2N3906
SYMBOL pnp 528 0 M180
WINDOW 0 38 45 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q9
SYMATTR Value 2N3906
SYMBOL npn 656 512 M0
WINDOW 3 56 68 Invisible 0
SYMATTR Value 2N3904
SYMATTR InstName Q10
SYMBOL npn 784 512 R0
WINDOW 0 38 48 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q11
SYMATTR Value 2N3904
SYMBOL pnp 912 0 R180
WINDOW 0 34 46 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q12
SYMATTR Value 2N3906
SYMBOL pnp 1072 0 M180
WINDOW 0 37 44 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q13
SYMATTR Value 2N3906
SYMBOL npn 1328 -32 R0
WINDOW 0 30 49 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q14
SYMATTR Value 2N3904
SYMBOL npn 992 416 R0
WINDOW 0 31 51 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q15
SYMATTR Value 2N3904
SYMBOL npn 1072 160 R0
WINDOW 0 38 46 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q16
SYMATTR Value 2N3904
SYMBOL npn 1312 64 M0
WINDOW 0 34 47 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q17
SYMATTR Value 2N3904
SYMBOL npn 1040 576 M0
WINDOW 0 33 50 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q22
SYMATTR Value 2N3904
SYMBOL npn 1072 512 R0
WINDOW 0 39 49 Left 0
WINDOW 3 56 68 Invisible 0
SYMATTR InstName Q19
SYMATTR Value 2N3904
SYMBOL pnp 1328 512 M180
WINDOW 0 42 43 Left 0
WINDOW 3 84 68 Invisible 0
SYMATTR InstName Q20
SYMATTR Value 2N3906
SYMBOL res 576 624 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 36 58 Left 0
SYMATTR InstName R4
SYMATTR Value 5K
SYMBOL res 832 192 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 43 62 Left 0
SYMATTR InstName R5
SYMATTR Value 39K
SYMBOL res 1120 624 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 40 59 Left 0
SYMATTR InstName R6
SYMATTR Value 50
SYMBOL res 1040 624 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 34 59 Left 0
SYMATTR InstName R7
SYMATTR Value 50K
SYMBOL res 1376 128 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 36 60 Left 0
SYMATTR InstName R8
SYMATTR Value 25
SYMBOL res 1376 272 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 38 59 Left 0
SYMATTR InstName R9
SYMATTR Value 50
SYMBOL res 1040 240 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 32 57 Left 0
SYMATTR InstName R10
SYMATTR Value 7.5K
SYMBOL res 1040 48 R0
WINDOW 0 36 40 Invisible 0
WINDOW 3 36 60 Left 0
SYMATTR InstName R11
SYMATTR Value 4.5K
SYMBOL cap 960 176 R0
WINDOW 0 24 8 Invisible 0
WINDOW 3 -46 6 Left 0
SYMATTR InstName C1
SYMATTR Value 30pF
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 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value ""
SYMATTR Value2 AC 1.0
SYMBOL res 1792 112 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R12
SYMATTR Value 1K
SYMBOL res 1952 -32 R90
WINDOW 0 0 56 VBottom 0
WINDOW 3 32 56 VTop 0
SYMATTR InstName R13
SYMATTR Value 100K
TEXT -416 784 Left 0 !.ac dec 100 1Hz 1MegHz
TEXT 1720 336 Left 0 ;(My test circuit here.)