View single post by David Allen
 Posted: Thu Dec 7th, 2017 03:14 pm
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David Allen

 

Joined: Mon Mar 6th, 2017
Location: Northport, USA
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nRichard Daugird wrote: I have seen them on eBay for cheap, they look pretty cool. I wonder if a fan's operating speed could be controlled with one of these?
Richard, as John says, using any rheostat to "directly" control the motor is going to require a massive one.  Most of the slide ones I've seen on eBay are low power devices. They are made for signal control, such as audio levels.

While these can not directly control the fan's motor, you COULD use one of them to control a TRIAC or other solid state speed control device.... assuming your motor is compatible with it.