[Amps] First Power in 25 years question

[Randall, Randy]

I have an old Eico ‎950‎ RC bridge that I have used to reform caps.
It has a built in current limited 0-500 volt source.  I have used this with good success.  I no longer use it to test caps for leakage since I now have a Sprague TO-6A cap analyzer, but I still find it very handy for reforming.  These used to be cheap and plentiful @ hamfests.  Many are buying them just to rob the eye tubes.  Go here for a schematic and description:

http://www.nostalgiaair.org/References/Manuals/EIC/EIC_18.zip

&

http://www.nostalgiaair.org/References/Manuals/EIC/EIC_13.zip


Randy AB9GO

"In theory, theory and practice are the same thing.  In practice they're not."


-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On Behalf Of Dave Cole
Sent: Friday, April 09, 2010 10:06 AM
To: amps at contesting.com
Subject: Re: [Amps] First Power in 25 years question

Hi John,

Thank you for the information!  I am debating if I should try and
restore it, or just sell it.  The restore process looks like a bit of
work, so I may be inclined to sell it.  I know it worked 25 years ago,
as I had it on then.  However I do not want to put power to it until I
fully understand the ramifications of that process.  It is dusty, but
otherwise looks pretty close to new, so It might make a nice addition
to teh shack here...

If I power it, I will remove the HV filter and try and reform it
first.  THANKS for that tip!!

Dave
NK7Z



On Fri, 9 Apr 2010 09:35:23 -0400
john.brewer at us.schneider-electric.com thus spake:

>
> I have a 6100 that was similarly brought back to life.   The major item of concern , is
> electrolytics, and in particular the HV filter caps.
>
> If you want to play it safe, disconnect the filters and bring them up to rated voltage with a
> current limiting external supply , to see if they will form. If the leakage doesn't go down,
> you'll know it without putting your power transformer at risk.
>
> Neat old rig, with ~200 made. Mine works well  and hope to get it driving the matching amp I
> got some years ago (B&W LPA1....it's a pair of 813's)
>
> 73
> John K5MO
>
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