Version 4
SHEET 1 1140 680
WIRE 192 48 80 48
WIRE 672 96 576 96
WIRE 80 144 80 48
WIRE 192 160 192 128
WIRE 320 160 192 160
WIRE 448 160 320 160
WIRE 576 160 576 96
WIRE 576 160 448 160
WIRE 576 240 576 224
WIRE 736 240 576 240
WIRE 832 256 800 256
WIRE 880 256 832 256
WIRE 1024 256 960 256
WIRE 672 272 672 176
WIRE 736 272 672 272
WIRE 192 288 192 240
WIRE 320 288 320 240
WIRE 448 288 448 240
WIRE 576 288 576 240
WIRE 672 320 672 272
WIRE 832 320 672 320
WIRE 880 320 832 320
WIRE 1088 320 1088 304
WIRE 1088 320 960 320
WIRE 1088 336 1088 320
WIRE 80 368 80 224
WIRE 80 368 -64 368
WIRE 192 368 80 368
WIRE 320 368 192 368
WIRE 448 368 320 368
WIRE 576 368 448 368
WIRE -64 400 -64 368
WIRE 320 400 320 368
FLAG 320 400 0
FLAG -64 288 +5
FLAG -64 480 -5
FLAG 768 224 -5
FLAG 768 288 +5
FLAG 1088 208 +5
FLAG 1088 416 0
SYMBOL voltage 80 128 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 1.6
SYMBOL res 176 32 R0
SYMATTR InstName R1
SYMATTR Value 10k
SYMBOL res 176 144 R0
SYMATTR InstName R2
SYMATTR Value 680k
SYMBOL res 304 144 R0
SYMATTR InstName R3
SYMATTR Value 680k
SYMBOL res 432 144 R0
SYMATTR InstName R4
SYMATTR Value 680k
SYMBOL res 560 144 R0
SYMATTR InstName R5
SYMATTR Value 680k
SYMBOL res 176 272 R0
SYMATTR InstName R6
SYMATTR Value 68k
SYMBOL res 304 272 R0
SYMATTR InstName R7
SYMATTR Value 68k
SYMBOL res 432 272 R0
SYMATTR InstName R8
SYMATTR Value 68k
SYMBOL res 560 272 R0
SYMATTR InstName R9
SYMATTR Value 68k
SYMBOL Opamps\\UniversalOpamp2 768 256 M180
SYMATTR InstName U1
SYMBOL res 656 80 R0
SYMATTR InstName R10
SYMATTR Value 4Meg
SYMBOL npn2 1024 208 R0
SYMATTR InstName Q1
SYMBOL cap 816 256 R0
SYMATTR InstName C1
SYMATTR Value 100pF
SYMBOL res 976 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 220
SYMBOL res 976 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL res 1104 432 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R13
SYMATTR Value 1
SYMBOL voltage -64 272 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -64 384 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value 5
TEXT -98 552 Left 2 !.tran 0 1 0.1 0.1