Hi there - I need some odd valued potentiometers. I have two different setups I need:
one that ranges from 178.2 - 207.1 ohms
one that ranges from 96.3 to 168.6 ohms
So - my first inclination was to just use a single resistor for the smaller value and a potentiometer to cover the range. So for the first I'd need a 178.2 ohm resistor, and a 28.9 ohm pot. However - 28.9 ohm pots seem to be slightly less common than I would like. Same goes for the second setup and the desired 72.3 ohm pot. Now - I can fudge around on these values a bit - but not too much. These values are setting the output voltage of a light, and if that voltage goes too high I suspect the magic smoke of the device will be released.
So - any suggestions? I don't need very linear operation from the potentiometer, if that matters. I don't think many pots have mechanical stops to stop you from setting the value too high. What do I do?