Re: Arctronics capacitors

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

Original poster: "Crow Leader" <tesla-at-lists.symmetric-dot-net> 

Keep in mind if you start to hide your capacitors in tupperware, you also
reduce the effective cooling the capacitor has. They all make heat, and it's
always warmer inside the capacitor than outside. The thermal mass and
conductivity of the cap will control whether or not the outside feels hot
vs. the inside is already overheated and the outside still seems cool.

KEN


----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Tuesday, February 24, 2004 2:08 PM
Subject: Re: Arctronics capacitors


 > Original poster: "Christoph Bohr" <cb-at-luebke-lands.de>
 >
 > Hello Finn Hammer, Kreso, hello all.
 >
 >
 >  >  >  >  >  > And they performed well, in a 2 by 2 configuration,
doubling
 > the
 >  >  >  > voltage
 >  >  >  >  >  > Discharge length 1.8 meters, 32kV primary voltage reached
300
 >
 > If you use2 in seies for 70KV and use 32KV primary voltage you are
probably
 > stressin your caps more than
 > I do with a single cap with 25KV rating on my 12KV MOT-Stack. But from
what
 > this discussion brought up until
 > now they seem to be very "Tesla-Compatible" in the way they are made, but
 > can become insufficient for
 > TC use if mistreated in previous life..... OK this means everybody buy a
 > brand new one ;-)
 > I am still not sure if and what kind of container I want to enclose them
in.
 > I really don't want an oil mess on my parents carpet,
 > especially after somone told me how silicon oil behaves, almost running
 > everywhere, even up your walls until evenly distributed.
 >
 >  >Yes it is the model 37667 35 kvdc and 30 nF. The cap didnt work for 2
days
 >  >before explosion. I ran my coil for maybe second or two ( just turned
 > variac
 >  >to max) and the top of capacitor ( where the sticker is ) just ripped
and
 >  >flyed around the room messing evrything with oil and oil did also spring
 >  >from capacitor!
 >
 > Kreso, this really replaces the white whale in Ahab's nightmares ;-) This
is
 > exaclty what I don't want to experience indoors.
 > But it sounds really strange to me to reactivate the cap after the housing
 > broke and spilled the oil. On the other hand it is
 > very interesting to know what is inside this cap. I always thought there
was
 > one big cap inside.
 > If my caps fail this way, the microswitch sensors might trigger just the
 > moment when the first pieces of cap hit my head.*heheh*
 > It seems that you cap did not experience a pressure buildup due to heating
 > up, but a single internal shorting out that produced enough
 > oil vapour to "open" the case.
 >
 > Thats it for now
 >
 > best regards
 >
 > Chistoph Bohr
 >
 >
 >  > times
 >  >  > per
 >  >  >  >  > second.
 >  >  >  >  >  > The original MMC
 >  >  >  >  >  >
 > http://home5.inet.tele.dk/f-hammer/tesla/museum/cap/cappage.htm
 >  >  >  >  >  > had given in due to corona problems on the leads of the
 >  > individual
 >  >  >  > caps,
 >  >  >  >  >  > and we were waiting for the "real mccoy" to arrive from
 > Maxwell.
 >  >  >  >  >  > They did well, and are now in storage, ready to get plugged
 > in,
 >  > in
 >  >  > the
 >  >  >  >  > case
 >  >  >  >  >  > that the main cap should fail.
 >  >  >  >  >  > Of course, when a Tesla Coil Manufactoring company starts
to
 > sell
 >  >  > out
 >  >  >  >  > vital
 >  >  >  >  >  > stock it could mean that the caps are no good, or the
buisness
 > in
 >  >  >  > general
 >  >  >  >  >  > is not good. Who knows?
 >  >  >  >  >  >
 >  >  >  >  >  > Are they worth the money? Hard to say. Bragging right is
 > bought
 >  >  > dearly,
 >  >  >  >  > but
 >  >  >  >  >  > personally I think every coiler should have at one time
owned
 > a
 >  >  > Maxwell
 >  >  >  >  >  > cap, just to see how a quality product is made.
 >  >  >  >  >  >
 >  >  >  >  >  > Well, Kreso, I guess I didn`t answer any questions for you
 > here,
 >  > but
 >  >  > at
 >  >  >  >  >  > least I had a good time at the keyboard this fine morning,
so
 >  > that`s
 >  >  >  > what
 >  >  >  >  > I
 >  >  >  >  >  > bid you, and anyone reading this: I bid you A fine morning!
 >  >  >  >  >  >
 >  >  >  >  >  > Cheers, Finn Hammer
 >  >  >  >  >  >
 >  >  >  >  >  >
 >  >  >  >  >  >
 >  >  >  >  >  > Tesla list wrote:
 >  >  >  >  >  >
 >  >  >  >  >  > >Original poster: Kreso Bukvic <kreso.bukvic-at-kc.htnet.hr>
 >  >  >  >  >  > >I see they sell high voltage maxwell capacitors? Some are
69
 >  > some
 >  >  > 99
 >  >  >  > $?
 >  >  >  >  > What
 >  >  >  >  >  > >is the diffrence? IS it worth to buy from them?
 >  >  >  >  >  > >
 >  >  >  >  >  >
 >  >  >  >  >
 >  >
 >  >
 >  >
 >  >
 >
 >
 >