Re: Magnifier Primary Capacitors - EQUIDRIVE vs. STANDARD

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

Original poster: "gtyler" <gtyler-at-drummond-dot-org.za> 


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, January 16, 2004 4:03 AM
Subject: Re: Magnifier Primary Capacitors - EQUIDRIVE vs. STANDARD


 > Original poster: Ian Macky <ian.macky-at-oracle-dot-com>
 >
 > On Thu, 15 Jan 2004, Tesla list wrote:
 >  > Original poster: "gtyler" <gtyler-at-drummond-dot-org.za>
 >  >
 >  > Some time ago I designed a 120 Kv SMPS for X-ray use. The
transformer
 >  > and output rectifier was in oil in a molded glass-fibre box. If I
ran it
 >  > with the lid off the oil would "jump" out the box at full voltage,
and
 >  > circulate violently at a reduced voltage. A materials science
professor
 >  > from a local university was also involved in the project and even
he
 >  > could not explain why this happened. Anyone have any ideas?
 >
 > surely there is mere convection component too?  hotter oil rises to
 > the top; and might not uneven heating of submerged components cause
 > other oil circulation patterns?  how much heat is being dumped into
 > that oil?  perhaps a thermometer might tell something.  sounds like
 > the electrical effects dominate, but it's not a black/white world.
 >

Every thing was still cool, and the effect is instantaneous, ie apply
power and with no delay up comes the oil! literally enough to splash
someone observing it.