Help making potentiometer

[physicboy]

Hi Marwit,

Please refer to this page:

How would I simulate a potentiometer with an audio taper?

Studying logarithmic taper in potentiometers, I believe what you truly need is a potentiometer rather than a resistance change in a logarithmic scale. My search indicates that analog Log POTs are generally constructed with an additional resistor in parallel to a linear potentiometer to approximate a logarithmic output (pseudo log). Here is a reference for further information. The Secret Life of Pots [image] And true logarithmic potentiometers are implemented in digital control, for example,…