how to tell the difference between a Linear and
an Audio taper by looking at them? Most of the NOS in the box say they are of the linear type on the box but I have 30 or so in unknown condition out of the box and some are noticeably used.
Thanks, Bob
You done be measuring them with your ohmmeter, and then sorting them apart.
E.G. you would expect the common pot to have a 270 degree of travel in its shaft rotation before hitting its stops at either end.
Therefore, you then put a large enough knob on the pot to be able to easier differentiate when you have the shaft at its mid point
setting of ~ 135 degrees.
You then measure across the extreme end terminals of the pot to see what the actual resistance of the pot element is.
Then you measure across the center terminal to either end and expect about 1/2 of that prior reading in case the unit is a
linear pot.
If you find quite a disparity in that reading being off from that halved value, expect that unit to made as an audio taper, logarithmic or some other variant taper.
73's de Edd
Tankoobettymuch!
Bob
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:You done be measuring them with your ohmmeter, and then sorting them apart.
:
:
:E.G. you would expect the common pot to have a 270 degree of travel in its shaft rotation before hitting its stops at either end.
:Therefore, you then put a large enough knob on the pot to be able to easier differentiate when you have the shaft at its mid point
:setting of ~ 135 degrees.
:
:You then measure across the extreme end terminals of the pot to see what the actual resistance of the pot element is.
:Then you measure across the center terminal to either end and expect about 1/2 of that prior reading in case the unit is a
:linear pot.
:
:If you find quite a disparity in that reading being off from that halved value, expect that unit to made as an audio taper, logarithmic or some other variant taper.
:
:
:
:73's de Edd
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