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Re: [TCML] plastic cap



Hi Marko,

I realize Plastic Capacitors of Chicago, Inc. has a pretty
big line of high voltage capacitors. A quick view of their
products page at: http://plasticcapacitors.com/product_index.html
reveals that the "BNZ" series are obviously the most de-
sirable capacitors for Tesla service. It appears this series is only built in small runs according to customer specifica- tions, though. I'm sure a few of the other mass produced varieties with the proper voltage/capacitance rating would probably still work, though.

I have been fortunate enough to come across an unused Plastic Capacitors BNZ 2500-104 unit that's rated at 0.1 uFd, at 25 kV(AC) at 60 hz, not "DC". From what I've gathered, it appears that you can determine a 60 hz AC rated capacitor's DC voltage rating by multiplying the AC voltage rating by about 2.3. Most of the motor run or snub-
ber caps that have a dual AC/DC (not the Australian rock
band) voltage rating will seem to depict this - i.e. 440 VAC or 1000 VDC, 660 VAC or 1500 VDC. That would depict
an equivalent DC rating of my "BNZ" cap at nearly 57 kV
(DC).

As a side note, a quick view of Plastic Capacitors' home
page, http://plasticcapacitors.com/, also reveals that they actually have a "Tesla coil capacitors" icon, although this icon appears to be inactive.
David Rieben





----- Original Message ----- From: "mark olson" <kc5gym@xxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Wednesday, January 16, 2008 10:01 PM
Subject: Re: [TCML] plastic cap



Hi Marko,

Does the term "Plastic Capacitors" refer to the type of the capacitors or
to the brand name of the capacitors?

David Rieben


Dear group:

I hope that the reference to "plastic capacitors" in the book report is not a "bad omen".
I just bought six off ebay.


brand name, David

Thanks,
Marko
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