Small DC stuff [RE-wrenches]

[Steve Willey, Backwoods Solar]

Kurt, I have been away to SolWest fair so this may be too late to help....
We find 24 volt muffin fans will operate on 12 volts at lower power, so they
are a safe bet to operate direct solar on 15 to 20 volts.

Steve Willey   www.backwoodssolar.com
Backwoods Solar Electric Systems
From: Kurt Nelson, SunWise <sunwise at win.bright.net>
To: <RE-wrenches at topica.com>
Sent: Tuesday, July 25, 2000 5:14 PM
Subject: Small DC stuff [RE-wrenches]


)  I also incorporate some Low voltage DC brushless "muffin" fans into some
> systems... composting toilets, ventilation, etc.  A guy stopped into my
shop
> and wanted to do a small PV direct ventilating system and I recommended a
> small panel and a couple such fans.  I know I have done PV direct
brushless
> muffin fans before, but I looked very foolish when I went to show him how
to
> put these simple components together and they wouldn't run.  Apparently
some
> of these fans handle the various voltages they may encounter in PV direct
> applications, while the electronics package in others will not???  I've
got
> a few in inventory that will run panel direct and a whole bunch that will
not.
>
> Any thoughts appreciated.


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