Re: GE caps - the long answer ;-))

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Bert Hickman <bert.hickman-at-aquila-dot-net> 

Ken, Dan and all,

On the other hand, the Ohmite parts may have been trashpicked from Ohmite's 
dumpster by an unscrupulous scrap hauler, or even by a surplus reseller 
perusing the goodies at the local junkyard. Unless defective items are 
physically destroyed in the manufacturing plant, they stand a good chance 
of resurfacing on the surplus market...

-- Bert --

Tesla list wrote:
>Original poster: "Crow Leader" <tesla-at-lists.symmetric-dot-net>
>It's reassuring to know Ohmite will still sell flawed parts without defacing
>or destroying them. Sort of makes me want to run out and buy Ohmite
>products.
>KEN
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Sunday, November 09, 2003 8:47 PM
>Subject: Re: GE caps - the long answer ;-))
>
>  > Original poster: dhmccauley-at-spacecatlighting-dot-com
>  >
>  > Your post answered itself.  The fact you said you bought these surplus
>sends
>  > all kinds of warning flags that you are getting inferior capacitors.
>  > Vendors typically release flawed products to the surplus market in a
>chance
>  > to make up some of the losses.  Usually, tax right-offs cover these
>losses,
>  > but in a lot of
>  > instances, more revenue can be made by selling directly to surplus
>vendors.
>  > I made a similar surplus purchase on those "blue" Ohmmite PowerMOX high
>  > voltage resistors about
>  > a year ago for about $0.50 each for 10MEG resistors.  I was surprised to
>see
>  > they were failing left and right when I was using them with some MMCs i
>  > built.  I called the vendor
>  > with the lot number (printed on the resistors), and they indeed did scrap
>  > these resistors due to an internal manufacturing flaw.
>  >
>  > Dan
>  >
>  >  > I've used the 42L's, (0.22 -at- 2000V) on my 5kVA pig powered coil.  Had
>to
>  > run
>  >  > 30/string so they'd last a reasonable amount of time. At 20/string
>their
>  >  > life expectancy was a minute or two. (Ends blown out)  I bought them
>  >  > surplus, (less than $1.00 each), so having to run 30/string wasn't such
>a
>  >  > big deal.
>  >  >
>  >  > I should also mention that when using Terry's original 0.056uF
>Panasonic
>  >  > caps I had to run 15/string, ("normal" was 8 to 10/string), or they'd
>  >  > overheat and rupture the case. I suspect the reason I had to run so
>many
>  >  > caps/string is that  my ballast, (Sears welder), was shoving a fairly
>  > large
>  >  > "inductive kick" into the caps, well beyond what one would think. As
>the
>  >  > saying goes..... "your mileage may vary"!
>  >  >
>  >  > Jon Rosenstiel
>  >
>  >
>  >
>
>.