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Re: Home brew capacitor
There is a 10kw 100kv power supply here that has been immersed in Shell
Diala AX
for over 10 years. Its innards are packed with acrylic sheets, standoffs,
and spacers.
I haven't seen any signs of attack as yet. Must be very minute. I do know
that
a non thermally stress relieved piece of acrylic with tapped threads in it
will crack
into a zillion pieces if immersed in methyl denatured alcohol sold in
hardware stores.
Barry
----------
|From: "tesla-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|To: Benson Barry; "Tesla-list-subscribers-at-poodle.pupman-dot-com"-at-PMDF-at-PAXMB1
|Subject: Re: Home brew capacitor
|Date: Friday, September 27, 1996 3:59AM
|
|<<File Attachment: 00000000.TXT>>
|From MALCOLM-at-directorate.wnp.ac.nzMon Sep 23 22:19:42 1996
|Date: Tue, 24 Sep 1996 07:38:43 +1200
|From: Malcolm Watts <MALCOLM-at-directorate.wnp.ac.nz>
|To: tesla-at-pupman-dot-com
|Subject: Re: Home brew capacitor
|
|Bert Hickman wrote....
|
|> Also, I think Perspex is the same thing as Plexiglas (Polymethyl
|> Methacrylate - PMMA). My plastics supplier's chemical resistance tables
|> indicate that PMMA is slowly attacked by transformer or mineral oil,
|> which is why I opted to use PVC seperator plates instead. However, I've
|> never heard of any coilers having oil leakage failures when using
|> Plexiglas top plates on the rolled caps...
|
|Ouch! I've got my plate cap in a perspex container. So far it seems
|OK with transformer oil but I'll keep an eye on it. Thanks for the
|warning.
|
|Malcolm
|
|PS - Welcome back Ian.
|