Good morning gents,
I apologize, but it's been many years since I have been out of school designing circuits, but I could use some help for a design solution.
Basically what I want to do is use a modified analog DC voltmeter to indicate the position of a mechanical control. I was able to find an outfit that specializes in modifying the gauges so that department is all set, except for the fact that unfortunately the only gauges they could supply that would match the form factor I needed read 8 to 16 volts DC rather than something more useful like 0 to 12.
My original plan was to use a 1k linear potentiometer and add a trim pot at either end to "calibrate" so that the range of motion of the control would (roughly) be represented by the range of the gauge. Accuracy is less important than the appearance of function. By the way, my input voltage is 14.7 volts DC.
What I am wondering is, will the trim pot solution actually work, or might it be better to set up a set of resistors switched in parallel to give me say, 5 points on the dial?
Your time and attention are appreciated.
I apologize, but it's been many years since I have been out of school designing circuits, but I could use some help for a design solution.
Basically what I want to do is use a modified analog DC voltmeter to indicate the position of a mechanical control. I was able to find an outfit that specializes in modifying the gauges so that department is all set, except for the fact that unfortunately the only gauges they could supply that would match the form factor I needed read 8 to 16 volts DC rather than something more useful like 0 to 12.
My original plan was to use a 1k linear potentiometer and add a trim pot at either end to "calibrate" so that the range of motion of the control would (roughly) be represented by the range of the gauge. Accuracy is less important than the appearance of function. By the way, my input voltage is 14.7 volts DC.
What I am wondering is, will the trim pot solution actually work, or might it be better to set up a set of resistors switched in parallel to give me say, 5 points on the dial?
Your time and attention are appreciated.
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