RE: [TCML] cap strings

["S&JY" <youngs@xxxxxxxxx>]

Marko,

This has been discussed years ago.  As I recall, the consensus was to not
run jumpers between series string caps.  Why?  Because, if one of the caps
fails shorted, then it effectively shorts out all the rest of the caps in
parallel with it, and the rest of the caps in all the strings become
over-volted and can prematurely fail.  If there are no jumpers, than only
the string with the failed cap experiences excessive voltage stress.  

The other reason to not add the cross-connections is that it simplifies
construction--it is much simpler to connect strings only at their ends.
This also makes it easier to add or remove strings by just disconnecting one
end of a string.

--Steve Y.

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of mark olson
Sent: Saturday, February 09, 2008 7:29 AM
To: Tesla Coil Mailing List
Subject: [TCML] cap strings

Hello group,

Are there any advantages or disadvantages to connecting caps as paralleled 
groups of
series strings or seriesed groups of parallel.

It occurred to me that value wise it makes no difference, but if the series 
strings in parallel
are modified such that the terminations between each individual cap are 
connected to the
corresponding terminations in the other strings the cluster has effectively 
become parallel
groups in series.

It seems that these jumpers would even out the load, make the bank more 
robust and decrease
the number of bleeders required.

Sincerely,
Marko

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