M
Michael
- Jan 1, 1970
- 0
Hi there - I need some odd valued potentiometers. I have two different
setups I need:
one that ranges from 178.2 - 207.1 ohms
and
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?
Thanks!
-Michael
setups I need:
one that ranges from 178.2 - 207.1 ohms
and
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?
Thanks!
-Michael