Version 4
SHEET 1 968 680
WIRE 688 -64 80 -64
WIRE 80 -32 80 -64
WIRE 80 -32 -96 -32
WIRE 832 -32 640 -32
WIRE -96 -16 -96 -32
WIRE 80 -16 80 -32
WIRE 384 -16 80 -16
WIRE 608 -16 464 -16
WIRE 688 0 688 -64
WIRE 960 0 688 0
WIRE 688 16 688 0
WIRE 240 32 176 32
WIRE 640 32 640 -32
WIRE 640 32 320 32
WIRE 656 32 640 32
WIRE 832 48 720 48
WIRE 912 48 912 -32
WIRE 912 48 832 48
WIRE 432 64 352 64
WIRE 608 64 608 -16
WIRE 608 64 512 64
WIRE 656 64 608 64
WIRE 80 80 80 64
WIRE 176 80 176 32
WIRE 176 80 80 80
WIRE -96 96 -96 64
WIRE 80 96 80 80
WIRE 80 96 -96 96
WIRE 176 96 80 96
WIRE 608 96 256 96
WIRE 688 96 688 80
WIRE 784 96 688 96
WIRE 80 112 80 96
WIRE 832 112 624 112
WIRE -96 128 -96 96
WIRE 960 144 960 0
WIRE 960 144 688 144
WIRE 240 160 160 160
WIRE 624 160 624 112
WIRE 624 160 320 160
WIRE 656 160 624 160
WIRE 832 176 720 176
WIRE 912 176 912 112
WIRE 912 176 832 176
WIRE 352 192 352 64
WIRE 432 192 352 192
WIRE 608 192 608 96
WIRE 608 192 512 192
WIRE 656 192 608 192
WIRE 784 208 784 96
WIRE 784 208 688 208
WIRE 80 224 80 192
WIRE 160 224 160 160
WIRE 160 224 80 224
WIRE -96 240 -96 208
WIRE 80 240 80 224
WIRE 80 240 -96 240
WIRE 160 240 80 240
WIRE 576 240 240 240
WIRE 832 240 608 240
WIRE 80 256 80 240
WIRE 960 256 960 144
WIRE 960 256 688 256
WIRE -96 272 -96 240
WIRE 608 272 608 240
WIRE 608 272 320 272
WIRE 656 272 608 272
WIRE 832 288 720 288
WIRE 912 288 912 240
WIRE 912 288 832 288
WIRE 240 304 144 304
WIRE 320 304 320 272
WIRE 352 304 352 192
WIRE 432 304 352 304
WIRE 576 304 576 240
WIRE 576 304 512 304
WIRE 656 304 576 304
WIRE 784 320 784 208
WIRE 784 320 688 320
WIRE 832 336 608 336
WIRE 80 352 80 336
WIRE 144 352 144 304
WIRE 144 352 80 352
WIRE 960 352 960 256
WIRE 960 352 688 352
WIRE -96 368 -96 352
WIRE 80 368 80 352
WIRE 80 368 -96 368
WIRE 160 368 80 368
WIRE 576 368 240 368
WIRE 688 384 688 352
WIRE 80 400 80 368
WIRE 608 400 608 336
WIRE 656 400 608 400
WIRE 832 416 720 416
WIRE 912 416 912 336
WIRE 912 416 832 416
WIRE 352 432 352 304
WIRE 432 432 352 432
WIRE 576 432 576 368
WIRE 576 432 512 432
WIRE 656 432 576 432
WIRE 240 480 80 480
WIRE 608 480 608 400
WIRE 608 480 320 480
WIRE 80 496 80 480
WIRE 352 496 352 432
WIRE 352 496 80 496
WIRE 688 496 688 448
WIRE 688 496 352 496
WIRE 784 496 784 320
WIRE 784 496 688 496
WIRE 80 528 80 496
FLAG 80 528 0
FLAG 832 416 b1
FLAG 832 288 b2
FLAG 832 176 b3
FLAG 832 48 b4
SYMBOL Misc\\battery 80 -32 R0
WINDOW 3 38 70 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName BT4
SYMATTR Value 12
SYMBOL Misc\\battery 80 96 R0
WINDOW 3 29 77 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName BT3
SYMATTR Value 12
SYMBOL Misc\\battery 80 240 R0
WINDOW 3 34 72 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName BT2
SYMATTR Value 12
SYMBOL Misc\\battery 80 384 R0
WINDOW 0 6 14 Left 2
WINDOW 3 30 75 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName BT1
SYMATTR Value 12
SYMBOL res 928 -48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res 928 96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 1Meg
SYMBOL res 928 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 1Meg
SYMBOL res 928 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL res 480 -32 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 10Meg
SYMBOL res 272 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10Meg
SYMBOL res 256 224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10Meg
SYMBOL res 256 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 10Meg
SYMBOL res 336 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 10Meg
SYMBOL res 336 144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 10Meg
SYMBOL res 336 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 10Meg
SYMBOL res 416 320 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 1Meg
SYMBOL res 528 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R13
SYMATTR Value 1Meg
SYMBOL res 528 48 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R14
SYMATTR Value 1Meg
SYMBOL Opamps\\LT1179A 688 -16 R0
SYMATTR InstName U1
SYMBOL Opamps\\LT1179A 688 112 R0
SYMATTR InstName U2
SYMBOL Opamps\\LT1179A 688 224 R0
SYMATTR InstName U3
SYMBOL Opamps\\LT1179A 688 352 R0
SYMATTR InstName U4
SYMBOL res 416 448 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R15
SYMATTR Value 1Meg
SYMBOL res 336 464 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R16
SYMATTR Value 10Meg
SYMBOL res -80 368 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R17
SYMATTR Value 4.99Meg
SYMBOL res -80 224 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R18
SYMATTR Value 1.8Meg
SYMBOL res -80 80 R180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R19
SYMATTR Value 920k
TEXT 406 528 Left 2 !.tran 0.1 startup