Fan Speed control

[Elumia]

Found this while looking for something else. Don't have any direct experience, but I recall someone asking how to slow down a fan. Might be an economical way to control a single speed fan instead of buying a fancy multi-speed one

http://www.zaneinc.com/user/Ds-am2-l.pdf

Mark

[depatty]

Looks interesting, as do several of the other products they manufacture (DC LED light dimmers in particular), but don't see any prices or suppliers on their site. I tried doing a search on Google for their products and don't find anyone carrying them there either. Anyone know of a supplier?

[Lgboro]

www.theledlight.com has several of the dimmers that range in price from $32 to $38 usd. Does look to have promise without a bunch of wiring resistors etc. that I probably should not be doing given my knowledge of wiring.

[wannabefree]

These controls are generally just pulse width modulators. If you can weild a soldering iron and are longer on time than money, you might try something like [url]http://www.allspectrum.com/store/product_info.php?products_id=1488[/url]. These kits are easy to build and come with good instructions. This thing will control DC fans and LED lights by creating a stream of variable width pulses to whatever you want to control. Lights and fans are very forgiving of this, but don't run your computer off one of these things.

Well, if the link doesn't show up right, then I don't know what I'm doing. But I do understand PWMs, and while the cost is a bit more than a rheostat or series resistor, it will save your battery a bit of power.

[Rock]

What WannaBeFree said. I just bought a kit off of Ebay for $15 or so delivered. Search for PWM DC Motor Controller.

You do have to solder it yourself, but it's a small project. I'm going to use them to dim my LED lights as well as slow ventilation fans.

Eric