Re: Potting Diode Strings

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<Goinbonkers-at-aol-dot-com>
> 
> It was used for years to pot home made capacitors etc.  has similar
properties
> to polyethylene as far a dielectric strength and constant.   I had a bank of
> capacitors made from some transmitter caps that had the problem of arcing at
> full voltage(about one inch between the bus plates) so I potted the bank in
> parafin.   It worked well for about a year, but eventually carbon tracked.
> was easy to pot and un-pot though.  It should work well for a diode string.
> Mike

	You can eaily dissolve holt melt glue in very hot paraffin (have a fire
extinguisher handy and be very careful, but can be done) and the
resultant mixture is a lot more rigid, doesn't shring as much, and looks
a lot neater.  Unfortunately, it appears that the bubbles are just
tinier than in paraffin, and insulation improvement isn't worth the
bother.

Ed

Ed