Version 4
SHEET 1 2724 960
WIRE 320 -448 16 -448
WIRE 864 -448 320 -448
WIRE 1024 -448 864 -448
WIRE 1664 -448 1024 -448
WIRE 1824 -448 1664 -448
WIRE 16 -400 16 -448
WIRE 320 -400 320 -448
WIRE 864 -400 864 -448
WIRE 1024 -336 1024 -448
WIRE 320 -272 320 -320
WIRE 560 -272 320 -272
WIRE 16 -256 16 -320
WIRE 560 -256 560 -272
WIRE 864 -240 864 -320
WIRE 464 -208 80 -208
WIRE 496 -208 464 -208
WIRE 1824 -208 1824 -448
WIRE 2016 -208 1824 -208
WIRE 2208 -208 2016 -208
WIRE 2416 -208 2208 -208
WIRE 1024 -192 1024 -256
WIRE 1024 -192 928 -192
WIRE 464 -176 464 -208
WIRE 1664 -176 1664 -448
WIRE -608 -160 -608 -176
WIRE -608 -160 -672 -160
WIRE 80 -160 80 -208
WIRE 80 -160 16 -160
WIRE -672 -128 -672 -160
WIRE -608 -128 -608 -160
WIRE 1392 -128 1248 -128
WIRE 1600 -128 1392 -128
WIRE 1824 -128 1824 -208
WIRE 2016 -128 2016 -208
WIRE 2208 -128 2208 -208
WIRE 2416 -128 2416 -208
WIRE 560 -112 560 -160
WIRE 560 -112 464 -112
WIRE 1760 -80 1664 -80
WIRE 1952 -80 1760 -80
WIRE 2144 -80 1952 -80
WIRE 2352 -80 2144 -80
WIRE 1392 -64 1392 -128
WIRE 16 16 16 -160
WIRE 320 16 320 -272
WIRE 1504 48 1456 48
WIRE 1568 48 1504 48
WIRE 1696 48 1568 48
WIRE 1824 48 1824 -32
WIRE 1824 48 1776 48
WIRE -208 64 -256 64
WIRE -80 64 -128 64
WIRE -48 64 -80 64
WIRE 432 64 384 64
WIRE 1568 64 1568 48
WIRE 560 80 560 -112
WIRE 1152 80 560 80
WIRE 1248 80 1248 -128
WIRE 1248 80 1152 80
WIRE 1504 80 1504 48
WIRE 1824 80 1824 48
WIRE 2016 96 2016 -32
WIRE 2208 96 2208 -32
WIRE 2416 96 2416 -32
WIRE 864 128 864 -144
WIRE 864 128 816 128
WIRE 1152 144 1152 80
WIRE 1248 176 1248 80
WIRE 1392 176 1392 96
WIRE 1504 176 1504 144
WIRE 1504 176 1392 176
WIRE 1568 176 1568 144
WIRE 1568 176 1504 176
WIRE 1664 176 1664 0
WIRE 1664 176 1568 176
WIRE 1824 176 1824 160
WIRE 1824 176 1664 176
WIRE 2016 176 1824 176
WIRE 2208 176 2016 176
WIRE 2416 176 2208 176
WIRE 2560 176 2416 176
WIRE 2624 176 2560 176
WIRE 2656 176 2624 176
WIRE 320 192 16 192
WIRE 864 192 320 192
WIRE 1824 192 1824 176
WIRE 1504 208 1504 176
WIRE 1568 208 1568 176
WIRE 2560 208 2560 176
WIRE -256 224 -256 64
WIRE 320 240 16 240
WIRE 816 240 816 128
WIRE 816 240 320 240
WIRE 1392 256 1392 176
WIRE 1504 304 1504 272
WIRE 1504 304 1456 304
WIRE 1568 304 1568 288
WIRE 1568 304 1504 304
WIRE 1696 304 1568 304
WIRE 1824 304 1824 272
WIRE 1824 304 1776 304
WIRE 2624 304 2624 176
WIRE 2656 304 2624 304
WIRE 1152 320 1152 224
WIRE 1152 320 576 320
WIRE 1248 320 1248 240
WIRE 1248 320 1152 320
WIRE 1664 336 1664 176
WIRE 2560 336 2560 288
WIRE -80 368 -80 64
WIRE -48 368 -80 368
WIRE 432 368 432 64
WIRE 432 368 384 368
WIRE 1824 368 1824 304
WIRE 2016 368 2016 256
WIRE 2208 368 2208 256
WIRE 2416 368 2416 256
WIRE 2560 400 2560 336
WIRE 2656 400 2656 304
WIRE 1760 416 1664 416
WIRE 1952 416 1760 416
WIRE 2144 416 1952 416
WIRE 2352 416 2144 416
WIRE 1248 464 1248 320
WIRE 1392 464 1392 416
WIRE 1392 464 1248 464
WIRE 1600 464 1392 464
WIRE 1824 544 1824 464
WIRE 2016 544 2016 464
WIRE 2016 544 1824 544
WIRE 2208 544 2208 464
WIRE 2208 544 2016 544
WIRE 2416 544 2416 464
WIRE 2416 544 2208 544
WIRE 576 560 576 320
WIRE 576 560 480 560
WIRE 16 624 16 416
WIRE 96 624 16 624
WIRE 576 624 576 560
WIRE 864 624 864 192
WIRE 96 672 96 624
WIRE 96 672 80 672
WIRE 480 672 480 624
WIRE 480 672 96 672
WIRE 512 672 480 672
WIRE 1024 672 928 672
WIRE 320 736 320 416
WIRE 576 736 576 720
WIRE 576 736 320 736
WIRE 864 752 864 720
WIRE 1024 752 1024 672
WIRE 16 768 16 720
WIRE 320 768 320 736
WIRE 16 896 16 848
WIRE 320 896 320 848
WIRE 320 896 16 896
WIRE 864 896 864 832
WIRE 864 896 320 896
WIRE 1024 896 1024 832
WIRE 1024 896 864 896
WIRE 1664 896 1664 512
WIRE 1664 896 1024 896
WIRE 1824 896 1824 544
WIRE 1824 896 1664 896
FLAG 16 -448 V+
FLAG 16 896 V-
FLAG -672 -128 0
FLAG -608 -256 V+
FLAG -608 -48 V-
FLAG -256 304 0
FLAG 2560 480 0
FLAG 2560 336 FB
FLAG 432 64 FB
FLAG 2656 480 0
FLAG 2656 176 out
FLAG -256 64 in
SYMBOL npn -48 16 R0
SYMATTR InstName Q1
SYMATTR Value BC846B
SYMBOL npn 384 16 M0
SYMATTR InstName Q2
SYMATTR Value BC846B
SYMBOL pnp 384 416 R180
SYMATTR InstName Q3
SYMATTR Value BC856B
SYMBOL pnp -48 416 M180
SYMATTR InstName Q4
SYMATTR Value BC856B
SYMBOL res 0 96 R0
SYMATTR InstName R1
SYMATTR Value 150
SYMATTR SpiceLine tol=1
SYMBOL res 304 96 R0
SYMATTR InstName R2
SYMATTR Value 150
SYMATTR SpiceLine tol=1
SYMBOL res 304 224 R0
SYMATTR InstName R3
SYMATTR Value 150
SYMATTR SpiceLine tol=1
SYMBOL res 0 224 R0
SYMATTR InstName R4
SYMATTR Value 150
SYMATTR SpiceLine tol=1
SYMBOL res 0 -416 R0
SYMATTR InstName R5
SYMATTR Value 1k5
SYMATTR SpiceLine tol=1
SYMBOL res 304 -416 R0
SYMATTR InstName R6
SYMATTR Value 220
SYMATTR SpiceLine tol=1
SYMBOL res 0 752 R0
SYMATTR InstName R7
SYMATTR Value 1k5
SYMBOL res 304 752 R0
SYMATTR InstName R8
SYMATTR Value 220
SYMBOL npn 80 624 M0
SYMATTR InstName Q9
SYMATTR Value 2SCR554P
SYMBOL npn 928 624 M0
SYMATTR InstName Q11
SYMATTR Value BC846B
SYMBOL res 848 736 R0
SYMATTR InstName R9
SYMATTR Value 1k5
SYMBOL pnp 928 -144 R180
SYMATTR InstName Q12
SYMATTR Value BC856B
SYMBOL res 848 -416 R0
SYMATTR InstName R10
SYMATTR Value 1k5
SYMBOL cap 1232 176 R0
SYMATTR InstName C3
SYMATTR Value 220µ
SYMBOL npn 1456 0 M0
SYMATTR InstName Q13
SYMATTR Value BC846B
SYMBOL pnp 1456 352 R180
SYMATTR InstName Q14
SYMATTR Value BC856B
SYMBOL diode 1376 -64 R0
SYMATTR InstName D7
SYMATTR Value 1N4148
SYMBOL diode 1376 352 R0
SYMATTR InstName D8
SYMATTR Value 1N4148
SYMBOL diode 1520 144 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D9
SYMATTR Value 1N4148
SYMBOL diode 1520 272 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D10
SYMATTR Value 1N4148
SYMBOL res 1552 48 R0
SYMATTR InstName R12
SYMATTR Value 1k
SYMATTR SpiceLine tol=1
SYMBOL res 1552 192 R0
SYMATTR InstName R13
SYMATTR Value 1k
SYMATTR SpiceLine tol=1
SYMBOL res 1648 -96 R0
SYMATTR InstName R14
SYMATTR Value 220
SYMBOL res 1648 320 R0
SYMATTR InstName R15
SYMATTR Value 220
SYMBOL npn 1760 -128 R0
SYMATTR InstName Q17
SYMATTR Value 2SCR554P
SYMBOL pnp 1760 464 M180
SYMATTR InstName Q18
SYMATTR Value 2SAR554P
SYMBOL res 1808 64 R0
SYMATTR InstName R16
SYMATTR Value 47
SYMBOL res 1808 176 R0
SYMATTR InstName R17
SYMATTR Value 47
SYMBOL res 1792 32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 3k7
SYMATTR SpiceLine tol=1
SYMBOL res 1792 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 3k7
SYMATTR SpiceLine tol=1
SYMBOL voltage -608 -272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 35V
SYMBOL voltage -608 -144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 35V
SYMBOL voltage -256 208 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(-1 1 0 0 0 1m 2m)
SYMBOL res 2544 192 R0
SYMATTR InstName R20
SYMATTR Value 1k
SYMBOL res 2544 384 R0
SYMATTR InstName R21
SYMATTR Value 100Meg
SYMBOL npn 1600 -176 R0
SYMATTR InstName Q15
SYMATTR Value 2SCR554P
SYMBOL pnp 1600 512 M180
SYMATTR InstName Q16
SYMATTR Value 2SAR554P
SYMBOL voltage 1024 736 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value 4
SYMBOL voltage 1024 -352 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V6
SYMATTR Value 4
SYMBOL voltage 1152 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 4
SYMBOL res 2640 384 R0
SYMATTR InstName R11
SYMATTR Value 100
SYMBOL npn 1952 -128 R0
SYMATTR InstName Q19
SYMATTR Value 2SCR554P
SYMBOL npn 2144 -128 R0
SYMATTR InstName Q20
SYMATTR Value 2SCR554P
SYMBOL npn 2352 -128 R0
SYMATTR InstName Q21
SYMATTR Value 2SCR554P
SYMBOL pnp 1952 464 M180
SYMATTR InstName Q22
SYMATTR Value 2SAR554P
SYMBOL pnp 2144 464 M180
SYMATTR InstName Q23
SYMATTR Value 2SAR554P
SYMBOL pnp 2352 464 M180
SYMATTR InstName Q24
SYMATTR Value 2SAR554P
SYMBOL res 2000 80 R0
SYMATTR InstName R22
SYMATTR Value 47
SYMBOL res 2192 80 R0
SYMATTR InstName R23
SYMATTR Value 47
SYMBOL res 2400 80 R0
SYMATTR InstName R24
SYMATTR Value 47
SYMBOL res 2400 160 R0
SYMATTR InstName R25
SYMATTR Value 47
SYMBOL res 2192 160 R0
SYMATTR InstName R26
SYMATTR Value 47
SYMBOL res 2000 160 R0
SYMATTR InstName R27
SYMATTR Value 47
SYMBOL res -112 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R28
SYMATTR Value 1
SYMBOL pnp 80 -160 R180
SYMATTR InstName Q25
SYMATTR Value 2SAR554P
SYMBOL pnp 496 -160 M180
SYMATTR InstName Q5
SYMATTR Value 2SAR554P
SYMBOL npn 512 624 R0
SYMATTR InstName Q6
SYMATTR Value 2SCR554P
SYMBOL cap 448 -176 R0
SYMATTR InstName C1
SYMATTR Value 4,7pF
SYMBOL cap 464 560 R0
SYMATTR InstName C2
SYMATTR Value 4,7pF
TEXT -272 544 Left 2 !.tran 0 {10/freq} 0 {10/freq/fft}
TEXT -272 520 Left 2 !.four {freq} V(out)
TEXT -272 448 Left 2 !.opt plotwinsize=0
TEXT -272 472 Left 2 !.param freq=1k
TEXT -272 496 Left 2 !.param fft=2*pi*2**11
TEXT -272 568 Left 2 !.four {freq} V(in)