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ron mccann wrote:
First post. I am working through a Heathkit power/wave generator. There
are two rheostats both labeled 100k. One is supposed to be linear the other
an audio resistor. They seem to act the same with a basic digital vom. Does
anyone know what these two terms are referring to?
No, they won't measure the same way with an ohmmeter.
One is an linear taper and the other is an audio (non-linear or
logarithmic) taper.
At the full left position, both the linear pot and
the audio pot will show almost zero Ohms.
At the one fourth position, the linear pot will show 25K Ohms and
the audio pot will show about 100 Ohms.
At the half position, the linear pot will show 5K Ohms and
the audio pot will show about 1,000 Ohms.
At the three fourths position, the linear pot will show 75K Ohms and the
audio pot will show about 10,000 Ohms.
At the full right position, both the linear pot and
the audio pot will show 100K Ohms.
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