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June 2010

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Subject:
From:
Brian Stumm <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Brian Stumm <[log in to unmask]>
Date:
Wed, 30 Jun 2010 08:10:21 -0700
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They have these on Amazon and several other sites for sale. Perhaps
it's time to replace your old dingy hat with a new one or perhaps you
can find specs for the fan motor if you troll the internets.

http://www.amazon.com/Sun-Mate-692-Solar-Safari-Cool/dp/B0002SNPDO/ref=sr_1_1?s=automotive&ie=UTF8&qid=1277910517&sr=1-1

On Wed, Jun 30, 2010 at 6:42 AM, Eric Kalgren <[log in to unmask]> wrote:
> Once upon a time, in the early 90's, I bought a pith helmet with a solar
> powered fan attached to the front of it.  It was hands-down the coolest
> hat on the block.
>
> The small solar panel that powered the thing broke and I want to replace
> it, but I don't know how much solar panel I need to run the motor.  I
> know it's 3 VDC because it uses 2 X AA batteries as a back up supply,
> but I don't know how much current I need to run the motor.
>
> The old panel sat in a 2" X 2 1/2" pocket on top of the hat.  I've
> Googled it and checked out a few options but nothing listed has the same
> footprint.  And so I am punting to the TechNet to see if anyone might
> have an idea of how to guesstimate the current draw of a small DC fan
> without having an O-Scope handy.
>
> I'll send a picture to Steve as well, just for kicks.
>
> Thanks!
>
> Eric Kalgren
> Electrical Engineer
>
> The Ferrite Co. Inc.
> 165 Ledge Street
> Nashua, NH 03060
> Phone 603-881-5234 X 153
> Fax 603-881-5406
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-- 
Brian Stumm
ETS Energy Technology Systems, Inc.
http://EnergyTechnologySystems.com
[log in to unmask]
509-276-2015 (PH)
509-276-2016 (FX)

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