Version 4
SHEET 1 992 996
WIRE -512 0 -560 0
WIRE -400 0 -432 0
WIRE -320 0 -400 0
WIRE -288 0 -320 0
WIRE -176 0 -208 0
WIRE 112 0 64 0
WIRE 224 0 192 0
WIRE 304 0 224 0
WIRE 336 0 304 0
WIRE 448 0 416 0
WIRE -560 32 -560 0
WIRE -400 32 -400 0
WIRE 64 32 64 0
WIRE 224 32 224 0
WIRE 384 64 368 64
WIRE -256 96 -256 80
WIRE 368 96 368 64
WIRE -320 112 -320 0
WIRE -288 112 -320 112
WIRE 304 112 304 0
WIRE 336 112 304 112
WIRE -176 128 -176 0
WIRE -176 128 -224 128
WIRE -144 128 -176 128
WIRE 448 128 448 0
WIRE 448 128 400 128
WIRE 480 128 448 128
WIRE -560 144 -560 112
WIRE -400 144 -400 112
WIRE -288 144 -320 144
WIRE 64 144 64 112
WIRE 224 144 224 112
WIRE 336 144 304 144
WIRE -256 176 -256 160
WIRE 368 176 368 160
WIRE -480 224 -560 224
WIRE -320 224 -320 144
WIRE -320 224 -400 224
WIRE 144 224 64 224
WIRE 304 224 304 144
WIRE 304 224 224 224
WIRE -560 256 -560 224
WIRE -320 256 -320 224
WIRE 304 256 304 224
WIRE -176 272 -176 256
WIRE -560 368 -560 336
WIRE -320 368 -320 336
WIRE -176 368 -176 352
WIRE 304 368 304 336
WIRE 192 512 192 496
WIRE 304 512 304 496
WIRE -496 576 -560 576
WIRE -400 576 -416 576
WIRE -320 576 -400 576
WIRE -288 576 -320 576
WIRE -176 576 -208 576
WIRE -560 608 -560 576
WIRE -400 608 -400 576
WIRE 192 608 192 592
WIRE 304 608 304 592
WIRE -240 640 -256 640
WIRE -256 672 -256 640
WIRE -320 688 -320 576
WIRE -288 688 -320 688
WIRE -176 704 -176 576
WIRE -176 704 -224 704
WIRE -144 704 -176 704
WIRE -560 720 -560 688
WIRE -400 720 -400 688
WIRE -288 720 -320 720
WIRE -256 752 -256 736
WIRE -480 800 -560 800
WIRE -320 800 -320 720
WIRE -320 800 -400 800
WIRE -320 832 -320 800
WIRE -176 848 -176 832
WIRE -320 944 -320 912
WIRE -176 944 -176 928
FLAG -176 368 0
FLAG -176 256 V+
FLAG 304 368 0
FLAG 64 144 0
FLAG 384 64 V2+
FLAG 480 128 out2
FLAG 224 144 0
FLAG 368 176 V2-
FLAG 304 608 0
FLAG 304 496 V2-
FLAG -320 368 0
FLAG -560 368 0
FLAG -560 144 0
FLAG -256 80 V+
FLAG -144 128 out
FLAG -400 144 0
FLAG -256 176 0
FLAG -560 224 Vin
FLAG 64 224 Vin
FLAG -320 944 0
FLAG -560 720 0
FLAG -240 640 V1+
FLAG -144 704 out1
FLAG -256 752 0
FLAG -560 800 Vin
FLAG -400 720 0
FLAG 192 608 0
FLAG 192 496 V2+
FLAG -176 944 0
FLAG -176 832 V1+
SYMBOL voltage -176 256 R0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL Misc\\EuropeanResistor 128 240 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R5
SYMATTR Value 200k
SYMBOL Misc\\EuropeanResistor 288 240 R0
SYMATTR InstName R6
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor 96 16 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 15k
SYMBOL Misc\\EuropeanResistor 320 16 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R8
SYMATTR Value 15k
SYMBOL voltage 64 16 R0
SYMATTR InstName V5
SYMATTR Value 5
SYMBOL Opamps\\UniversalOpamp2 368 128 R0
SYMATTR InstName U2
SYMBOL Misc\\EuropeanResistor 208 16 R0
SYMATTR InstName R9
SYMATTR Value 10k
SYMBOL voltage 304 496 R0
SYMATTR InstName V6
SYMATTR Value -1
SYMBOL Misc\\EuropeanResistor -496 240 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 200k
SYMBOL Misc\\EuropeanResistor -336 240 R0
SYMATTR InstName R2
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -528 16 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 15k
SYMBOL Misc\\EuropeanResistor -304 16 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 12k
SYMBOL voltage -560 240 R0
SYMATTR InstName V1
SYMATTR Value 30
SYMBOL voltage -560 16 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL Opamps\\UniversalOpamp2 -256 128 R0
SYMATTR InstName U1
SYMBOL Misc\\EuropeanResistor -416 16 R0
SYMATTR InstName R10
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -496 816 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 200k
SYMBOL Misc\\EuropeanResistor -336 816 R0
SYMATTR InstName R12
SYMATTR Value 10k
SYMBOL Misc\\EuropeanResistor -512 592 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R13
SYMATTR Value 7.5k
SYMBOL Misc\\EuropeanResistor -304 592 R270
WINDOW 0 27 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName R14
SYMATTR Value 12k
SYMBOL voltage -560 592 R0
SYMATTR InstName V8
SYMATTR Value 2.5
SYMBOL Opamps\\UniversalOpamp2 -256 704 R0
SYMATTR InstName U3
SYMBOL Misc\\EuropeanResistor -416 592 R0
SYMATTR InstName R15
SYMATTR Value 30k
SYMBOL voltage 192 496 R0
SYMATTR InstName V4
SYMATTR Value 6
SYMBOL voltage -176 832 R0
SYMATTR InstName V7
SYMATTR Value 5
TEXT 152 736 Left 2 !.dc V1 30 60 1
TEXT 32 256 Left 2 ;30..60V
TEXT -520 296 Left 2 ;30..60V
TEXT -592 840 Left 2 ;30..60V
TEXT -552 -64 Left 2 ;5V Reference
TEXT -552 512 Left 2 ;2.5V Reference
TEXT -608 -72 Left 2 ;A
TEXT -608 504 Left 2 ;B
TEXT 48 -56 Left 2 ;C
RECTANGLE Normal -80 416 -624 -96 2
RECTANGLE Normal -80 992 -624 480 2
RECTANGLE Normal 544 416 0 -96 2