Version 4
SHEET 1 1148 872
WIRE -448 -224 -448 -240
WIRE -288 -224 -288 -240
WIRE 160 -144 96 -144
WIRE 304 -144 224 -144
WIRE -448 -112 -448 -144
WIRE -368 -112 -448 -112
WIRE -288 -112 -288 -144
WIRE -288 -112 -368 -112
WIRE -368 -96 -368 -112
WIRE 96 -32 96 -144
WIRE 224 -32 192 -32
WIRE 304 -32 304 -144
WIRE 416 -32 416 -64
WIRE -16 32 -480 32
WIRE 96 32 96 -32
WIRE 96 32 -16 32
WIRE 224 32 192 32
WIRE 304 32 304 -32
WIRE 1056 64 912 64
WIRE 96 96 96 32
WIRE 144 96 144 32
WIRE 224 96 192 96
WIRE 304 96 304 32
WIRE 416 96 416 48
WIRE 416 96 304 96
WIRE 768 96 416 96
WIRE 816 96 768 96
WIRE 864 96 816 96
WIRE 912 96 912 64
WIRE 912 96 864 96
WIRE 928 96 912 96
WIRE -480 112 -480 32
WIRE 864 112 864 96
WIRE 144 160 144 96
WIRE -16 176 -16 32
WIRE 96 176 96 96
WIRE 96 176 -16 176
WIRE 224 176 192 176
WIRE 304 176 304 96
WIRE 928 192 864 192
WIRE 144 240 144 160
WIRE -352 272 -352 208
WIRE -16 272 -16 176
WIRE 16 272 -16 272
WIRE 144 272 144 240
WIRE 144 272 112 272
WIRE 224 272 144 272
WIRE 304 272 304 176
WIRE -96 320 -128 320
WIRE 272 352 272 336
WIRE 400 352 272 352
WIRE 512 352 480 352
WIRE -352 368 -352 352
WIRE -16 368 -16 272
WIRE 64 368 64 336
WIRE 272 368 240 368
WIRE 768 384 768 96
WIRE 816 384 816 96
WIRE 1056 384 1056 64
WIRE 608 416 608 384
WIRE -352 448 -432 448
WIRE -304 448 -352 448
WIRE -144 448 -144 432
WIRE 224 448 224 432
WIRE 272 448 272 368
WIRE 320 448 272 448
WIRE 368 448 320 448
WIRE 400 448 368 448
WIRE 512 448 512 352
WIRE 512 448 480 448
WIRE -432 464 -432 448
WIRE -224 464 -224 448
WIRE -192 464 -192 320
WIRE -192 464 -224 464
WIRE -176 464 -192 464
WIRE 272 464 272 448
WIRE 272 464 256 464
WIRE -352 480 -352 448
WIRE -96 480 -96 320
WIRE -96 480 -112 480
WIRE -16 480 -32 480
WIRE 80 480 -16 480
WIRE 176 480 176 368
WIRE 176 480 144 480
WIRE 192 480 176 480
WIRE 544 480 544 464
WIRE -176 496 -208 496
WIRE -16 496 -16 480
WIRE 272 496 256 496
WIRE 608 496 576 496
WIRE 640 496 608 496
WIRE 864 496 864 192
WIRE 864 496 720 496
WIRE 272 512 272 496
WIRE 320 512 272 512
WIRE 368 512 320 512
WIRE 400 512 368 512
WIRE 496 512 480 512
WIRE 512 512 496 512
WIRE 592 528 576 528
WIRE -144 544 -144 512
WIRE 64 544 64 368
WIRE 224 560 224 512
WIRE 592 560 592 528
WIRE 640 560 592 560
WIRE 864 560 720 560
WIRE -432 576 -432 528
WIRE -352 576 -352 560
WIRE -352 576 -432 576
WIRE 864 576 864 560
WIRE 928 576 864 576
WIRE -208 592 -208 496
WIRE -16 592 -16 576
WIRE 0 592 -16 592
WIRE 496 592 496 512
WIRE 512 592 496 592
WIRE 592 592 592 560
WIRE -16 608 -16 592
WIRE -352 624 -352 576
WIRE 544 640 544 544
WIRE 624 640 624 592
WIRE 624 640 544 640
WIRE -480 688 -480 192
WIRE -16 688 -480 688
WIRE 64 688 64 640
WIRE 64 688 -16 688
WIRE 448 688 64 688
WIRE 464 688 448 688
WIRE 560 688 544 688
WIRE 768 688 768 448
WIRE 768 688 560 688
WIRE 816 688 816 448
WIRE 816 688 768 688
WIRE 864 688 864 656
WIRE 864 688 816 688
WIRE 896 688 864 688
WIRE 912 688 896 688
WIRE 896 736 896 688
WIRE 1056 736 1056 464
WIRE 1056 736 896 736
WIRE -208 752 -208 672
WIRE 560 752 560 688
WIRE 560 752 -208 752
WIRE 448 832 448 688
FLAG 272 336 0
FLAG 608 384 0
FLAG 912 688 out-
FLAG 928 96 out+
FLAG 448 832 0
FLAG -352 208 0
FLAG -368 -96 0
FLAG -448 -240 +12V
FLAG -288 -240 -12V
FLAG -144 544 -12V
FLAG 224 560 -12V
FLAG 544 464 -12V
FLAG -144 432 +12V
FLAG 224 432 +12V
FLAG 624 592 +12V
FLAG 416 -64 -12v
FLAG 928 192 sense+
FLAG 928 576 sense-
FLAG -352 624 0
SYMBOL res 320 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 0.27
SYMATTR SpiceLine pwr=4
SYMBOL res 320 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 0.27
SYMATTR SpiceLine pwr=4
SYMBOL res 320 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 0.27
SYMATTR SpiceLine pwr=4
SYMBOL res 320 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 0.27
SYMATTR SpiceLine pwr=4
SYMBOL res 320 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 220
SYMATTR SpiceLine pwr=2
SYMBOL npn 96 32 R270
SYMATTR InstName Q1
SYMATTR Value 2N3055
SYMBOL npn 96 96 R270
SYMATTR InstName Q2
SYMATTR Value 2N3055
SYMBOL npn 96 160 R270
SYMATTR InstName Q3
SYMATTR Value 2N3055
SYMBOL npn 96 240 R270
SYMATTR InstName Q4
SYMATTR Value 2N3055
SYMBOL npn 16 336 R270
SYMATTR InstName Q5
SYMATTR Value 2N2219A
SYMBOL res 80 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 2k
SYMATTR SpiceLine pwr=2
SYMBOL EXTRA\\AudioOpamp\\TI\\TL071 224 480 M0
SYMATTR InstName U1
SYMBOL EXTRA\\AudioOpamp\\TI\\TL071 -144 480 R0
SYMATTR InstName U2
SYMBOL diode -96 496 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N4148
SYMBOL diode 144 464 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value 1N4148
SYMBOL npn2 0 544 R0
SYMATTR InstName Q6
SYMATTR Value BC547C
SYMBOL res -32 480 R0
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL res -32 592 R0
SYMATTR InstName R8
SYMATTR Value 20k
SYMBOL diode 304 448 R0
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL diode 384 512 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N4148
SYMBOL res 496 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL res 496 496 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL cap -128 304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 680p
SYMBOL EXTRA\\AudioOpamp\\TI\\TL071 544 512 R180
SYMATTR InstName U3
SYMBOL res 608 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 2k
SYMBOL res 592 400 R0
SYMATTR InstName R12
SYMATTR Value 2k
SYMBOL res 736 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 15k
SYMBOL res 736 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R14
SYMATTR Value 15k
SYMBOL diode 784 448 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D5
SYMBOL cap 800 384 R0
SYMATTR InstName C4
SYMATTR Value 10µ
SYMBOL voltage 496 352 R90
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Usoll
SYMATTR Value 4
SYMBOL res 560 672 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R15
SYMATTR Value 0.1
SYMBOL res -224 576 R0
SYMATTR InstName R16
SYMATTR Value 10k
SYMBOL res -208 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R17
SYMATTR Value 10k
SYMBOL voltage -352 368 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName Isoll
SYMATTR Value 4.096
SYMBOL voltage -480 96 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 40
SYMBOL diode 224 -160 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D6
SYMBOL voltage -448 -240 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName +12V
SYMATTR Value 12
SYMBOL voltage -288 -128 R180
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName -12V
SYMATTR Value 12
SYMBOL current 416 48 R180
WINDOW 0 24 80 Left 2
WINDOW 3 24 0 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName I1
SYMATTR Value 0.01
SYMBOL res 848 96 R0
SYMATTR InstName R18
SYMATTR Value 470
SYMBOL res 848 560 R0
SYMATTR InstName R19
SYMATTR Value 470
SYMBOL cap 240 352 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 680p
SYMBOL res 1040 368 R0
SYMATTR InstName R20
SYMATTR Value 1g
SYMBOL res -368 352 R0
SYMATTR InstName R21
SYMATTR Value 10k
SYMBOL res -368 464 R0
SYMATTR InstName R22
SYMATTR Value 1.5k
SYMBOL cap -448 464 R0
SYMATTR InstName C3
SYMATTR Value 100n
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