Version 4
SHEET 1 1308 1708
WIRE 896 -320 -1008 -320
WIRE -672 -272 -800 -272
WIRE -608 -272 -672 -272
WIRE -448 -272 -608 -272
WIRE -144 -272 -448 -272
WIRE -80 -272 -144 -272
WIRE 224 -272 -80 -272
WIRE 416 -272 224 -272
WIRE 592 -272 416 -272
WIRE 784 -272 592 -272
WIRE 1008 -272 784 -272
WIRE -448 -240 -448 -272
WIRE -144 -240 -144 -272
WIRE 224 -240 224 -272
WIRE 416 -240 416 -272
WIRE 592 -240 592 -272
WIRE 784 -240 784 -272
WIRE -672 -192 -672 -272
WIRE -608 -192 -608 -272
WIRE -736 -128 -912 -128
WIRE -448 -128 -448 -160
WIRE -288 -128 -448 -128
WIRE 224 -128 224 -160
WIRE 416 -128 416 -160
WIRE 592 -128 592 -160
WIRE 784 -128 784 -160
WIRE -448 -112 -448 -128
WIRE -144 -112 -144 -160
WIRE 160 -80 128 -80
WIRE 352 -80 176 -80
WIRE 528 -80 352 -80
WIRE 720 -80 528 -80
WIRE -672 -64 -672 -128
WIRE -608 -64 -608 -128
WIRE -608 -64 -672 -64
WIRE -512 -64 -608 -64
WIRE -208 -64 -512 -64
WIRE 128 -48 128 -80
WIRE -1008 -16 -1008 -320
WIRE -912 0 -912 -128
WIRE -448 0 -448 -16
WIRE -32 0 -448 0
WIRE 64 0 32 0
WIRE -448 16 -448 0
WIRE -288 64 -288 -128
WIRE 128 80 128 48
WIRE 176 80 128 80
WIRE 224 80 224 -32
WIRE 224 80 176 80
WIRE 416 80 416 -32
WIRE 416 80 224 80
WIRE 592 80 592 -32
WIRE 592 80 416 80
WIRE 784 80 784 -32
WIRE 784 80 592 80
WIRE -144 112 -144 -16
WIRE -144 112 -224 112
WIRE 64 112 -144 112
WIRE -1136 128 -1168 128
WIRE -1008 128 -1008 64
WIRE -1008 128 -1056 128
WIRE -912 128 -912 64
WIRE -912 128 -1008 128
WIRE -608 144 -608 -64
WIRE 560 160 128 160
WIRE 608 160 560 160
WIRE 784 160 784 80
WIRE 784 160 688 160
WIRE 1008 160 1008 -272
WIRE -288 192 -288 160
WIRE -144 192 -288 192
WIRE 784 192 784 160
WIRE -144 208 -144 192
WIRE 64 208 -48 208
WIRE -448 224 -448 96
WIRE -288 224 -288 192
WIRE 1008 256 1008 240
WIRE 1024 256 1008 256
WIRE 560 272 560 160
WIRE 1008 272 1008 256
WIRE -800 288 -800 -272
WIRE -912 304 -912 128
WIRE -832 304 -912 304
WIRE 784 304 784 272
WIRE 832 304 784 304
WIRE 896 304 896 -320
WIRE 896 304 832 304
WIRE -736 320 -736 -128
WIRE -736 320 -768 320
WIRE -656 320 -736 320
WIRE -448 320 -448 288
WIRE -448 320 -656 320
WIRE -288 320 -288 288
WIRE -864 336 -1040 336
WIRE -832 336 -864 336
WIRE 784 336 784 304
WIRE -448 352 -448 320
WIRE -80 384 -80 -272
WIRE 64 384 -80 384
WIRE 896 400 896 304
WIRE -288 416 -288 400
WIRE -144 416 -144 272
WIRE -144 416 -288 416
WIRE -288 432 -288 416
WIRE 560 432 560 352
WIRE 560 432 128 432
WIRE 608 432 560 432
WIRE 784 432 784 416
WIRE 784 432 688 432
WIRE -144 480 -224 480
WIRE 64 480 -144 480
WIRE -1040 496 -1040 336
WIRE 896 496 896 480
WIRE 176 512 128 512
WIRE 224 512 176 512
WIRE 416 512 224 512
WIRE 592 512 416 512
WIRE 784 512 784 432
WIRE 784 512 592 512
WIRE -288 528 -352 528
WIRE -448 544 -448 416
WIRE 128 592 128 512
WIRE -448 640 -448 624
WIRE -32 640 -448 640
WIRE 64 640 32 640
WIRE -448 656 -448 640
WIRE -144 656 -144 480
WIRE 224 656 224 512
WIRE 416 656 416 512
WIRE 592 656 592 512
WIRE 784 656 784 512
WIRE -608 704 -608 224
WIRE -608 704 -688 704
WIRE -512 704 -608 704
WIRE -208 704 -512 704
WIRE 128 704 128 688
WIRE 160 704 128 704
WIRE 352 704 176 704
WIRE 528 704 352 704
WIRE 720 704 528 704
WIRE -448 784 -448 752
WIRE -352 784 -352 528
WIRE -352 784 -448 784
WIRE 224 784 224 752
WIRE 416 784 416 752
WIRE 592 784 592 752
WIRE 784 784 784 752
WIRE -688 800 -688 704
WIRE -448 800 -448 784
WIRE -144 800 -144 752
WIRE -608 816 -608 704
WIRE -800 928 -800 352
WIRE -688 928 -688 864
WIRE -688 928 -800 928
WIRE -608 928 -608 880
WIRE -608 928 -688 928
WIRE -448 928 -448 880
WIRE -448 928 -608 928
WIRE -144 928 -144 880
WIRE -144 928 -448 928
WIRE -48 928 -48 208
WIRE -48 928 -144 928
WIRE 224 928 224 864
WIRE 224 928 -48 928
WIRE 416 928 416 864
WIRE 416 928 224 928
WIRE 592 928 592 864
WIRE 592 928 416 928
WIRE 784 928 784 864
WIRE 784 928 592 928
WIRE 1008 928 1008 352
WIRE 1008 928 784 928
FLAG -1184 576 0
FLAG -1168 128 0
FLAG -864 336 IN
FLAG -656 320 OP
FLAG 896 496 0
FLAG 1024 256 0
FLAG 832 304 OUT
FLAG 176 80 eq1
FLAG 176 512 eq2
FLAG -1040 576 0
SYMBOL pnp 160 -32 M180
WINDOW 0 30 35 Left 2
WINDOW 3 24 63 Left 2
SYMATTR InstName Q3
SYMATTR Value MJL1302A
SYMBOL voltage -1184 480 M0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value2 AC 1
SYMATTR InstName V3
SYMATTR Value PULSE(-0.5 0.5 0.1m 0.01µ 0.01µ 500µ 1m)
SYMBOL res 880 384 R0
SYMATTR InstName R19
SYMATTR Value 8
SYMBOL npn 160 656 R0
WINDOW 0 33 33 Left 2
WINDOW 3 23 68 Left 2
SYMATTR InstName Q4
SYMATTR Value MJL3281A
SYMBOL voltage 1008 144 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 40
SYMBOL voltage 1008 256 M0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 40
SYMBOL pnp 528 -32 M180
WINDOW 0 30 35 Left 2
WINDOW 3 24 63 Left 2
SYMATTR InstName Q11
SYMATTR Value MJL1302A
SYMBOL pnp 720 -32 M180
WINDOW 0 30 35 Left 2
WINDOW 3 24 63 Left 2
SYMATTR InstName Q12
SYMATTR Value MJL1302A
SYMBOL npn 528 656 R0
WINDOW 0 33 33 Left 2
WINDOW 3 23 68 Left 2
SYMATTR InstName Q13
SYMATTR Value MJL3281A
SYMBOL npn 720 656 R0
WINDOW 0 33 33 Left 2
WINDOW 3 23 68 Left 2
SYMATTR InstName Q14
SYMATTR Value MJL3281A
SYMBOL Misc\\EuropeanResistor 800 288 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R1
SYMATTR Value 0.39
SYMBOL Misc\\EuropeanResistor 800 432 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R2
SYMATTR Value 0.39
SYMBOL Misc\\EuropeanResistor 240 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R3
SYMATTR Value 0.22
SYMBOL Misc\\EuropeanResistor 608 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R7
SYMATTR Value 0.22
SYMBOL Misc\\EuropeanResistor 800 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R8
SYMATTR Value 0.22
SYMBOL Misc\\EuropeanResistor 240 880 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R12
SYMATTR Value 0.22
SYMBOL Misc\\EuropeanResistor 608 880 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R17
SYMATTR Value 0.22
SYMBOL Misc\\EuropeanResistor 800 880 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R18
SYMATTR Value 0.22
SYMBOL npn -512 656 R0
SYMATTR InstName Q15
SYMATTR Value BD139
SYMBOL pnp -512 -16 M180
WINDOW 0 54 32 Left 2
WINDOW 3 56 69 Left 2
SYMATTR InstName Q16
SYMATTR Value BD140
SYMBOL Misc\\EuropeanResistor -432 112 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 48 Left 2
SYMATTR InstName R11
SYMATTR Value 220
SYMBOL Misc\\EuropeanResistor -432 640 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R15
SYMATTR Value 220
SYMBOL diode -464 224 R0
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode -464 352 R0
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL Misc\\EuropeanResistor -432 896 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R20
SYMATTR Value 100
SYMBOL diode -624 816 R0
SYMATTR InstName D3
SYMATTR Value SR531D2
SYMBOL Misc\\EuropeanResistor -432 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R21
SYMATTR Value 100
SYMBOL diode -624 -192 R0
SYMATTR InstName D4
SYMATTR Value SR531D2
SYMBOL Misc\\EuropeanResistor -592 240 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R22
SYMATTR Value 39K
SYMBOL Misc\\EuropeanResistor 592 176 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R23
SYMATTR Value 120
SYMBOL Misc\\EuropeanResistor 544 256 R0
SYMATTR InstName R24
SYMATTR Value 22K
SYMBOL diode 32 624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D5
SYMATTR Value 1N4148
SYMBOL diode -32 16 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 -2 34 VBottom 2
SYMATTR InstName D6
SYMATTR Value 1N4148
SYMBOL Misc\\EuropeanResistor -272 416 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R25
SYMATTR Value 22
SYMBOL pnp -224 528 R180
WINDOW 0 54 32 Left 2
WINDOW 3 56 69 Left 2
SYMATTR InstName Q17
SYMATTR Value BD140
SYMBOL npn -224 64 M0
SYMATTR InstName Q18
SYMATTR Value BD139
SYMBOL cap -688 -192 R0
SYMATTR InstName C1
SYMATTR Value 10µ
SYMBOL cap -704 800 R0
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL Misc\\EuropeanResistor -1152 144 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R10
SYMATTR Value 1K
SYMBOL Misc\\EuropeanResistor -1024 -32 R0
SYMATTR InstName R9
SYMATTR Value 18K
SYMBOL Misc\\EuropeanResistor 592 448 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R26
SYMATTR Value 120
SYMBOL pnp 128 208 R180
WINDOW 0 54 32 Left 2
WINDOW 3 56 69 Left 2
SYMATTR InstName Q19
SYMATTR Value BD140
SYMBOL npn 128 384 M0
SYMATTR InstName Q20
SYMATTR Value BD139
SYMBOL Misc\\EuropeanResistor -128 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R27
SYMATTR Value 180
SYMBOL Misc\\EuropeanResistor -128 896 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R28
SYMATTR Value 180
SYMBOL cap -160 208 R0
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL voltage -1040 480 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value SINE(0 1.88 1K)
SYMBOL npn 64 -48 R0
SYMATTR InstName Q1
SYMATTR Value BD139
SYMBOL pnp 64 688 M180
WINDOW 3 68 66 Left 2
SYMATTR Value BD140
SYMATTR InstName Q2
SYMBOL diode -304 224 R0
SYMATTR InstName D7
SYMATTR Value SR531D10
SYMBOL cap -928 0 R0
SYMATTR InstName C3
SYMATTR Value 100p
SYMBOL Opamps\\opamp2 -800 256 R0
SYMATTR InstName U2
SYMATTR Value ADA4700
SYMBOL pnp 352 -32 M180
WINDOW 0 30 35 Left 2
WINDOW 3 24 63 Left 2
SYMATTR InstName Q5
SYMATTR Value MJL1302A
SYMBOL Misc\\EuropeanResistor 432 -144 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R4
SYMATTR Value 0.22
SYMBOL npn 352 656 R0
WINDOW 0 33 33 Left 2
WINDOW 3 23 68 Left 2
SYMATTR InstName Q6
SYMATTR Value MJL3281A
SYMBOL Misc\\EuropeanResistor 432 880 R180
WINDOW 0 31 76 Left 2
WINDOW 3 31 40 Left 2
SYMATTR InstName R5
SYMATTR Value 0.22
SYMBOL npn -208 656 R0
SYMATTR InstName Q7
SYMATTR Value BD139
SYMBOL pnp -208 -16 M180
WINDOW 0 54 32 Left 2
WINDOW 3 56 69 Left 2
SYMATTR InstName Q8
SYMATTR Value BD140
TEXT 440 984 Left 2 !.tran 0 20m 18m 0.1µ
TEXT -800 984 Left 2 !.model SR531D2 D(Ron=26 Roff=1G Vfwd=1.8)
TEXT -800 1016 Left 2 !.model SR531D10 D(Ron=9.5 Roff=1G Vfwd=1.8)
TEXT -800 1048 Left 2 !.model SR531D20 D(Ron=9 Roff=1G Vfwd=1.8)
TEXT 88 984 Left 2 !.include BD139.mod
TEXT 88 1008 Left 2 !.include BD140.mod
TEXT 88 1032 Left 2 !.include MJL3281A.mod
TEXT 88 1056 Left 2 !.include MJL1302A.mod
TEXT 88 1080 Left 2 !.include ADA4700.lib