Version 4
SHEET 1 2088 896
WIRE -144 -208 -288 -208
WIRE 176 -208 -64 -208
WIRE -288 -144 -288 -208
WIRE -960 -32 -960 -64
WIRE -960 -32 -1040 -32
WIRE -1040 0 -1040 -32
WIRE -960 0 -960 -32
WIRE 1664 48 1232 48
WIRE 1664 144 1664 48
WIRE 176 176 176 -208
WIRE 240 176 176 176
WIRE 352 176 320 176
WIRE 1232 192 1232 48
WIRE 1296 192 1232 192
WIRE 1568 192 1376 192
WIRE 2032 192 1760 192
WIRE 496 208 432 208
WIRE 656 208 576 208
WIRE -288 224 -288 192
WIRE 2032 224 2032 192
WIRE -288 320 -288 304
WIRE -32 320 -288 320
WIRE 240 320 144 320
WIRE 352 320 352 176
WIRE 352 320 320 320
WIRE 432 320 432 208
WIRE 432 320 352 320
WIRE 496 320 432 320
WIRE -288 336 -288 320
WIRE 656 336 656 208
WIRE 656 336 560 336
WIRE 736 336 656 336
WIRE 496 352 448 352
WIRE 1232 352 1232 192
WIRE 448 400 448 352
WIRE -288 448 -288 416
WIRE -64 640 -256 640
WIRE 144 640 144 320
WIRE 144 640 -64 640
FLAG 2032 304 0
FLAG -1040 0 0
FLAG -960 -144 V+
FLAG -960 80 V-
FLAG 1232 352 0
FLAG -288 -64 0
FLAG -288 192 V+
FLAG -32 320 ManualCV
FLAG -288 448 V-
FLAG 528 304 V+
FLAG 528 368 V-
FLAG 448 400 0
FLAG -288 672 V-
FLAG -288 608 V+
FLAG -64 640 AnotherCV
SYMBOL voltage 2032 208 R0
SYMATTR InstName V1
SYMATTR Value 0
SYMBOL res 1280 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 20k
SYMBOL voltage -960 -160 R0
SYMATTR InstName V3
SYMATTR Value 12
SYMBOL voltage -960 -16 R0
SYMATTR InstName V4
SYMATTR Value 12
SYMBOL SSI2161 1648 192 R0
SYMATTR InstName U1
SYMBOL res -304 208 R0
SYMATTR InstName R2
SYMATTR Value {PotUpper}
SYMBOL res -304 320 R0
SYMATTR InstName R3
SYMATTR Value {PotLower}
SYMBOL voltage -288 -160 R0
SYMATTR InstName V2
SYMATTR Value {CVin}
SYMBOL res -48 -224 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 1k
SYMBOL res 336 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 100k
SYMBOL res 336 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 50k
SYMBOL res 592 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 50k
SYMBOL Opamps\\UniversalOpamp2 528 336 R0
SYMATTR InstName U2
SYMBOL Potentiometer -288 640 R0
SYMATTR InstName U3
SYMATTR Value2 wiper={PotSlider}
TEXT -928 480 Left 2 !.op 1
TEXT -1136 256 Left 2 !.param PotSlider=0\n.param PotResistance=100k\n.param PotUpper={PotResistance*PotSlider+1m}\n.param PotLower={PotResistance*(1-PotSlider)+1m}
TEXT -1120 408 Left 2 !.meas Rtop param PotUpper
TEXT -1128 440 Left 2 !.meas Rbot param PotLower
TEXT -600 -24 Left 2 !.param cvin 0
TEXT -744 160 Left 2 !.step param PotSlider 0 1 0.1