Hi Peter,
I wasn't aware of that---thanks for sharing.
~73!~ de Eddy VE3CUI - VE3XZ
**********************************
----- Original Message -----
From: "la7sl Nils Petter" <la7sl@norgespost.no>
To: <amps@contesting.com>
Sent: Monday, February 08, 2010 7:02 AM
Subject: Re: [Amps] cap sizes
> Just a warning :
> Photoflash capacitors are not intended for PSU applications
> They will generally not withstand the high ripple currents involved
> in a power supply under load conditions...
> Overheating and breakdown may be the result unless you run them
> very well below ratings..
> I do not think a commercial amp manufacturer will choose these in their
> product.
> BUT ... modern high voltage capacitors are definitely a lot smaller .
> Also the ones suitable for a PSU... But stay away from the "photoflash"
> types....
> The same goes for laser discharge caps and some medical equipment caps...
> Peter
>
> ----- Original Message -----
> From: "Edward Swynar" <gswynar@durham.net>
> To: "Charles Harpole" <k4vud@hotmail.com>; <amps@contesting.com>
> Sent: Monday, February 08, 2010 12:50 PM
> Subject: Re: [Amps] cap sizes
>
>
> > On 8th February, Charles wrote:
> >
> > "...I was surprised to see the small size of the same value caps ....
the
> > originals in the DTR-2000 Dentron were 7 inches long and inch in dia.
The
> > new ones (in 2009) were same size around, but about one inch and 1/3
> > long.... or short as the truth be told. Wow."
> >
> > ***********************************
> >
> > Hi Charles,
> >
> > Yes, the physical size of the new electrolytics really is quite
> > amazing...!
> > They pack a LOT of "ufd." in a VERY small can anymore---even at high
> > voltage.
> >
> > I believe the popular term for these things is/was "photoflash
> > capacitors".
> > I see them often at Hamfests in this area selling for as little as fifty
> > cents apiece! Needless-to-say, I always stock-up whenever I can...
> >
> > ~73~ de Eddy VE3CUI - VE3XZ
> >
> >
> >
> >
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> >
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