Push-to-center Potentiometer

dknguyen · Jan 1, 2010

On old (non-digital) function generators they had those funny knobs to adjust things like duty cycle and DC offset where you had to pull the knob out for the dial setting to have effect. When pushed in, the duty cycle (or offset) would be 50% (or 0V) no matter what the dial was turned to.

What is this part called? I'm not entirely sure what terms to search for.

dknguyen · Jan 1, 2010

It just occured to me it could be a type of rotary dial knob that goes on a regular potentiometer that is also a push-pull switch where pushing in closes the switch and pulling opens it (and it is wired accordingly so that pushing it in corresponds to a preset potentiometer setting).

ericgibbs · Jan 1, 2010

dknguyen said:
On old (non-digital) function generators they had those funny knobs to adjust things like duty cycle and DC offset where you had to pull the knob out for the dial setting to have effect. When pushed in, the duty cycle (or offset) would be 50% (or 0V) no matter what the dial was turned to.

What is this part called? I'm not entirely sure what terms to search for.

hi,
This type is often used for this function.

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Push-to-center Potentiometer

dknguyen

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dknguyen

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ericgibbs

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Push-to-center Potentiometer

dknguyen

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