Version 4
SHEET 1 880 1176
WIRE 128 -16 64 -16
WIRE 240 -16 208 -16
WIRE 272 -16 240 -16
WIRE 384 -16 352 -16
WIRE 64 16 64 -16
WIRE -80 32 -80 16
WIRE 304 96 304 80
WIRE 240 112 240 -16
WIRE 272 112 240 112
WIRE -80 128 -80 112
WIRE 384 128 384 -16
WIRE 384 128 336 128
WIRE 416 128 384 128
WIRE 272 144 224 144
WIRE 304 176 304 160
WIRE -80 256 -80 240
WIRE 128 304 64 304
WIRE 240 304 208 304
WIRE 272 304 240 304
WIRE 384 304 352 304
WIRE 64 336 64 304
WIRE -80 352 -80 336
WIRE 304 416 304 400
WIRE 240 432 240 304
WIRE 272 432 240 432
WIRE 384 448 384 304
WIRE 384 448 336 448
WIRE 416 448 384 448
WIRE 272 464 224 464
WIRE -80 480 -80 464
WIRE 304 496 304 480
WIRE -80 576 -80 560
WIRE 128 608 64 608
WIRE 240 608 208 608
WIRE 272 608 240 608
WIRE 384 608 352 608
WIRE 64 640 64 608
WIRE 304 720 304 704
WIRE 240 736 240 608
WIRE 272 736 240 736
WIRE 384 752 384 608
WIRE 384 752 336 752
WIRE 416 752 384 752
WIRE 272 768 224 768
WIRE 304 800 304 784
WIRE 128 912 64 912
WIRE 240 912 208 912
WIRE 272 912 240 912
WIRE 384 912 352 912
WIRE 64 944 64 912
WIRE 304 1024 304 1008
WIRE 240 1040 240 912
WIRE 272 1040 240 1040
WIRE 384 1056 384 912
WIRE 384 1056 336 1056
WIRE 416 1056 384 1056
WIRE 272 1072 224 1072
WIRE 304 1104 304 1088
FLAG 64 16 0
FLAG 304 80 +V
FLAG 304 176 -V
FLAG -80 128 0
FLAG -80 16 in
FLAG 224 144 in
FLAG 416 128 out1
FLAG 64 336 0
FLAG 304 400 +V
FLAG 304 496 -V
FLAG 224 464 in
FLAG 416 448 out2
FLAG 64 640 0
FLAG 304 704 +V
FLAG 304 800 -V
FLAG 224 768 in
FLAG 416 752 out3a
FLAG 64 944 0
FLAG 304 1008 +V
FLAG 304 1104 -V
FLAG 224 1072 in
FLAG 416 1056 out3b
FLAG -80 352 0
FLAG -80 240 +V
FLAG -80 576 0
FLAG -80 464 -V
SYMBOL voltage -80 16 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 0
SYMATTR Value2 AC 1
SYMBOL Opamps\\UniversalOpamp2 304 128 R0
WINDOW 38 25 34 Left 2
SYMATTR InstName U1
SYMATTR SpiceModel level.1
SYMBOL res 112 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 10k AC=1u
SYMBOL res 256 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL Opamps\\UniversalOpamp2 304 448 R0
WINDOW 38 26 29 Left 2
SYMATTR InstName U2
SYMBOL res 112 320 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 10k AC=1u
SYMBOL res 256 320 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 10k
SYMBOL Opamps\\UniversalOpamp2 304 752 R0
WINDOW 38 27 26 Left 2
SYMATTR InstName U3
SYMATTR SpiceModel level.3a
SYMBOL res 112 624 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 10k AC=1u
SYMBOL res 256 624 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Opamps\\UniversalOpamp2 304 1056 R0
WINDOW 38 25 28 Left 2
SYMATTR InstName U4
SYMATTR SpiceModel level.3b
SYMBOL res 112 928 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 10k AC=1u
SYMBOL res 256 928 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL voltage -80 240 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 10
SYMBOL voltage -80 464 R0
WINDOW 123 24 124 Left 2
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value -10
TEXT -96 -120 Left 2 !.ac dec 100 1 1000Meg