On Saturday, March 05, 2011 12:49:30 am Igor Chudov did opine:

> Gene, I feel it! I would only suggest to look for high quality, dB rated
> ball bearing cooling fans.
> 
> I had a fan go bad in my car inverter in my truck. It was HORRIBLE, like
> listening to a whining child.
> 
> I bought a new dB rated fan from Digikey. The difference is astounding.
> I almost cannot hear it at all.
 
The point was to move the air, and that they do.  Turned down to 12 volts 
would be a lot quieter, but when I found they didn't let the magic smoke 
out on 19 volts, I lost the urge, those expensive A3977's need all the 
cooling they can get.

> Thanks for the compliment. I started out with quality iron, it really
> helped.

Yes it does, but what really upsets me is that you got it for less than I 
could get it if I was carrying a bazooka!  Such deals never ever show up 
out here in redneck country.  I did see an old Bridgeport sitting out in 
the weather for several years out south of town, but it disappeared before 
I "got the virus".  It may have been in such poor shape it was just 3k lbs 
of scrap iron too.  I'll never know.  Sigh...

Side questions, 1, I assume that was your son, and 2, where did you get 
that toroid for the motor supply?  That would allow me to tweak the 
voltages in my rigging because its so easy to add a few turns to the 
windings compared to the 30lb potted E frame boat anchor I use now.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
<http://tinyurl.com/ddg5bz>
I'm EMOTIONAL now because I have MERCHANDISING CLOUT!!

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