Re: [APD] Canopy Cooling

["S. Hieber" <shieber at yahoo_com>]

Good point. Sounds like the solution is in your message.
Get wart that's rated in the neighborhood. The fans are
just simple little motors and their needs are modest, but,
as you so rightly point out, they do have needs.

sh

--- Jerry Baker <jerry at bakerweb_biz> wrote:

> S. Hieber wrote:
> > So long as the voltage is correct and the transformer
> can
> > handle the amount of current that the fan needs (and
> the
> > fan blades are unobstructed), the fan will draw only
> the
> > amount of current it should.
> 
> That is true. The problem is that with linear
> transformers the rated 
> voltage is only supplied at the rated current. So, a 200
> mA transformer 
> only supplies 12VDC at 200 mA. If your fan draws 100 mA
> you will get a 
> higher voltage. This is probably fine as long as you are
> close, but if 
> you plug a 150 mA fan into a 1000 mA linear transformer,
> it won't go 
> (the fan). I have plugged fans into linear transformers
> and they didn't 
> work at all. That's how I learned that.
> 
> -- 
> Jerry Baker
> _______________________________________________
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
> http://www.actwin.com/mailman/listinfo/aquatic-plants
> 


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