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Re: Exploding Glassmikes
Hi Troy,
I ran with 10 of the 5 kV by 0.1uF Plastic Capacitor glass tube
capacitors in series with a 20 MegOhm equalizing resistor across each.
They worked ok with a 12 kV, 30 mA transformer. They got slightly warm
with 5 minute runs. I put little aluminum disks on each end to act as heat
sinks. Mylar is very heat sensitive. You have to keep them cool.
B2
----- Original Message -----
From: "Tesla List" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, April 19, 2000 9:41 PM
Subject: Fw: Exploding Glassmikes
> Original Poster: "Troy Peterson" <highvoltage-at-mad.scientist-dot-com>
>
> Hello all,
>
> Ok, there was a message a while back on the list about these types of
> capacitors exploding... seems its true. I just had a 0.001 MFD 20KV cap
> expload. The device was paralleled with two other caps, and after about 5
> seconds of tc operation it let go a BAM and left little fragments of glass in
> the bottem of my enclosure, as well as a nice roll of dialectric and foil.
> Final word: these caps do not seem well suited for TC use.... So has anyone
> made these work? I had the caps right across the power supply, with the spark
> gap and primary in parallel with them, is it better to do it the other
way? is
> there a way to heat-shink them or something so they don't over-current? I
would
> really like to be able to use them. I also have 5 of this kind of cap for
sale,
> they are about 2.25 inches long and 0.75 inches in diameter. They are
rated at
> 0.1 MFD at 10KV. I think I will sell them all for $40 OBO, email me off
list if
> you are interested (but once again - not for TC use....)
>
> Thankyou for any help.
>
> Troy Peterson,
> <mailto:troypete-at-sunwave-dot-net>troypete-at-sunwave-dot-net
>
>
>