Version 4
SHEET 1 3092 960
WIRE 144 -448 16 -448
WIRE 320 -448 144 -448
WIRE 608 -448 320 -448
WIRE 1056 -448 608 -448
WIRE 1216 -448 1056 -448
WIRE 1392 -448 1216 -448
WIRE 16 -400 16 -448
WIRE 608 -400 608 -448
WIRE 144 -384 144 -448
WIRE 16 -256 16 -320
WIRE 608 -256 608 -320
WIRE 496 -208 80 -208
WIRE 544 -208 496 -208
WIRE -608 -160 -608 -176
WIRE -608 -160 -672 -160
WIRE 80 -160 80 -208
WIRE 80 -160 16 -160
WIRE 496 -160 496 -208
WIRE -672 -128 -672 -160
WIRE -608 -128 -608 -160
WIRE 1056 -112 1056 -448
WIRE 496 -64 496 -96
WIRE 608 -64 608 -160
WIRE 608 -64 496 -64
WIRE 784 -64 608 -64
WIRE 992 -64 784 -64
WIRE 1216 -64 1216 -448
WIRE 1392 -64 1392 -448
WIRE 1152 -16 1056 -16
WIRE 1328 -16 1152 -16
WIRE 784 0 784 -64
WIRE 16 16 16 -160
WIRE 320 16 320 -448
WIRE -208 64 -256 64
WIRE -80 64 -128 64
WIRE -48 64 -80 64
WIRE 432 64 384 64
WIRE 608 96 608 -64
WIRE 896 112 848 112
WIRE 960 112 896 112
WIRE 1088 112 960 112
WIRE 1216 112 1216 32
WIRE 1216 112 1168 112
WIRE 960 128 960 112
WIRE 896 144 896 112
WIRE 1216 144 1216 112
WIRE 1392 144 1392 32
WIRE -256 160 -256 64
WIRE 208 192 16 192
WIRE 320 192 208 192
WIRE 432 208 432 64
WIRE 144 240 144 -304
WIRE 144 240 16 240
WIRE 320 240 144 240
WIRE 784 240 784 160
WIRE 896 240 896 208
WIRE 896 240 784 240
WIRE 960 240 960 208
WIRE 960 240 896 240
WIRE 1056 240 1056 64
WIRE 1056 240 960 240
WIRE 1216 240 1216 224
WIRE 1216 240 1056 240
WIRE 1392 240 1392 224
WIRE 1392 240 1216 240
WIRE 1456 240 1392 240
WIRE 1632 240 1456 240
WIRE 1728 240 1632 240
WIRE 1216 256 1216 240
WIRE 1392 256 1392 240
WIRE 1456 256 1456 240
WIRE 896 272 896 240
WIRE 960 272 960 240
WIRE 1632 272 1632 240
WIRE -256 304 -256 240
WIRE 784 320 784 240
WIRE -80 368 -80 64
WIRE -48 368 -80 368
WIRE 432 368 432 208
WIRE 432 368 384 368
WIRE 896 368 896 336
WIRE 896 368 848 368
WIRE 960 368 960 352
WIRE 960 368 896 368
WIRE 1088 368 960 368
WIRE 1216 368 1216 336
WIRE 1216 368 1168 368
WIRE 1456 368 1456 320
WIRE 1056 400 1056 240
WIRE 1632 400 1632 352
WIRE 1216 432 1216 368
WIRE 1392 432 1392 336
WIRE 1632 464 1632 400
WIRE 1728 464 1728 240
WIRE 1152 480 1056 480
WIRE 1328 480 1152 480
WIRE 608 528 608 176
WIRE 608 528 512 528
WIRE 784 528 784 480
WIRE 784 528 608 528
WIRE 992 528 784 528
WIRE 512 576 512 528
WIRE 16 592 16 416
WIRE 96 592 16 592
WIRE 16 624 16 592
WIRE 608 624 608 528
WIRE 96 672 96 592
WIRE 96 672 80 672
WIRE 512 672 512 640
WIRE 512 672 96 672
WIRE 544 672 512 672
WIRE 208 752 208 192
WIRE 16 768 16 720
WIRE 608 768 608 720
WIRE 16 896 16 848
WIRE 208 896 208 832
WIRE 208 896 16 896
WIRE 320 896 320 416
WIRE 320 896 208 896
WIRE 608 896 608 848
WIRE 608 896 320 896
WIRE 1056 896 1056 576
WIRE 1056 896 608 896
WIRE 1216 896 1216 528
WIRE 1216 896 1056 896
WIRE 1392 896 1392 528
WIRE 1392 896 1216 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 1632 544 0
FLAG 1632 400 FB
FLAG 1728 544 0
FLAG 1728 240 out
FLAG -256 64 in
FLAG 1456 448 0
FLAG 432 208 FB
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 220
SYMATTR SpiceLine tol=1
SYMBOL res 304 96 R0
SYMATTR InstName R2
SYMATTR Value 220
SYMATTR SpiceLine tol=1
SYMBOL res 304 224 R0
SYMATTR InstName R3
SYMATTR Value 220
SYMATTR SpiceLine tol=1
SYMBOL res 0 224 R0
SYMATTR InstName R4
SYMATTR Value 220
SYMATTR SpiceLine tol=1
SYMBOL pnp 80 -160 R180
SYMATTR InstName Q5
SYMATTR Value 2N2905A
SYMBOL res 0 -416 R0
SYMATTR InstName R5
SYMATTR Value 1k
SYMATTR SpiceLine tol=1
SYMBOL npn 80 624 M0
SYMATTR InstName Q7
SYMATTR Value 2N2219A
SYMBOL res 0 752 R0
SYMATTR InstName R7
SYMATTR Value 1k
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 res 1616 256 R0
SYMATTR InstName R20
SYMATTR Value 5k
SYMBOL res 1616 448 R0
SYMATTR InstName R21
SYMATTR Value 50Meg
SYMBOL voltage 608 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V5
SYMATTR Value 4V
SYMBOL res 1712 448 R0
SYMATTR InstName R11
SYMATTR Value 100
SYMBOL res -112 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R28
SYMATTR Value 1
SYMBOL cap 1440 256 R0
SYMATTR InstName C4
SYMATTR Value 1
SYMBOL res 1440 352 R0
SYMATTR InstName R22
SYMATTR Value 10Meg
SYMBOL npn 544 624 R0
SYMATTR InstName Q15
SYMATTR Value 2N2219A
SYMBOL pnp 544 -160 M180
SYMATTR InstName Q16
SYMATTR Value 2N2905A
SYMBOL cap 480 -160 R0
SYMATTR InstName C1
SYMATTR Value 470p
SYMBOL cap 496 576 R0
SYMATTR InstName C2
SYMATTR Value 470p
SYMBOL res 592 -416 R0
SYMATTR InstName R6
SYMATTR Value 100
SYMATTR SpiceLine tol=1
SYMBOL res 592 752 R0
SYMATTR InstName R8
SYMATTR Value 100
SYMATTR SpiceLine tol=1
SYMBOL current 208 752 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 4m
SYMBOL current 144 -384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I2
SYMATTR Value 4m
SYMBOL npn 848 64 M0
SYMATTR InstName Q6
SYMATTR Value BC846B
SYMBOL pnp 848 416 R180
SYMATTR InstName Q8
SYMATTR Value BC856B
SYMBOL diode 768 0 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 768 416 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL diode 912 208 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 912 336 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res 944 112 R0
SYMATTR InstName R9
SYMATTR Value 1k
SYMATTR SpiceLine tol=1
SYMBOL res 944 256 R0
SYMATTR InstName R10
SYMATTR Value 1k
SYMATTR SpiceLine tol=1
SYMBOL res 1040 -32 R0
SYMATTR InstName R12
SYMATTR Value 220
SYMBOL res 1040 384 R0
SYMATTR InstName R13
SYMATTR Value 220
SYMBOL res 1200 128 R0
SYMATTR InstName R14
SYMATTR Value 10
SYMBOL res 1200 240 R0
SYMATTR InstName R15
SYMATTR Value 10
SYMBOL res 1184 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R18
SYMATTR Value 2k2
SYMATTR SpiceLine tol=1
SYMBOL res 1184 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R19
SYMATTR Value 2k2
SYMATTR SpiceLine tol=1
SYMBOL pnp 1152 528 M180
SYMATTR InstName Q10
SYMATTR Value Qmjd253t4
SYMBOL pnp 992 576 M180
SYMATTR InstName Q11
SYMATTR Value Qmjd253t4
SYMBOL npn 992 -112 R0
SYMATTR InstName Q12
SYMATTR Value Qmjd243
SYMBOL npn 1152 -64 R0
SYMATTR InstName Q13
SYMATTR Value Qmjd243
SYMBOL npn 1328 -64 R0
SYMATTR InstName Q9
SYMATTR Value Qmjd243
SYMBOL pnp 1328 528 M180
SYMATTR InstName Q14
SYMATTR Value Qmjd253t4
SYMBOL res 1376 240 R0
SYMATTR InstName R16
SYMATTR Value 10
SYMBOL res 1376 128 R0
SYMATTR InstName R17
SYMATTR Value 10
SYMBOL voltage -256 144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PULSE(-0.5 0.5 0 1p 1p 1m 2m)
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)
TEXT -1672 -120 Left 2 !.include MJD243.MOD
TEXT -1672 -56 Left 2 !.include MJD253T4.MOD
TEXT -520 272 Left 2 !.tran 10m