change potentiometer threshold

jeff's picture

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Joined: Oct 16, 2020

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change potentiometer threshold
October 16, 2020 - 11:17am

I have a potentiometer that starts at 6k ohms then sweeps up to 10k ohms, I am needing it to control a motorized actuator that uses a 0 ohm to 10k ohm potentiometer, the actuator uses a comparator circuit where the actuator position is controlled relative to the position of the potentiometer, I cannot just replace the 6-10k ohm potentiometer because it is a special style, almost like a tube, and is attached to a board with components in the center of it, is there a device available or circuit that could be built to accommodate this? if not a solution for that, is there a circuit or device available that would allow me to control a servo position with a 6-10k ohm potentiometer that I could then physically mount the 0-10k ohm potentiometer to the servo so the servo would spin it? any input is much appreciated thanks!

jeff's picture

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so basically a circuit that
October 16, 2020 - 11:23am

so basically a circuit that when 6k ohms is appliedto the input, the output would read 0 ohms, then all the way to an input of 10k ohms were the output would be 10k ohms.

Sourav Gupta's picture

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Joined: Feb 12, 2018

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Hi
October 17, 2020 - 1:09am

Can you provide an image of the existing potentiometer and the arrangement of the whole circuit?