Re: Capasitor match

• To: tesla-at-pupman-dot-com
• Subject: Re: Capasitor match
• From: FutureT-at-aol-dot-com (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Tue, 15 Feb 2000 12:06:02 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

In a message dated 00-02-15 12:10:31 EST, you write:

<< Original Poster: "Bryan Miller" <ftbll-at-MailAndNews-dot-com> 
 
> Hello everyone,
>       I am building my first capasitor.  I know you want to try to match 
the 
> capacitance of the capacitor with the transformer, but is it okay to go 
over.  
> Is there any advantages/disadvantages to haveing a larger capacitor?  
Thanks 
>for any help.
  >>

Bryan,

The matching concept applies only to current limited transformers
such as NST's and OBIT's.  It's best to use a capacitor that is larger
than the matched size  (LTR).  This reduces the voltage stresses on
the NST.

As an example, my latest coil, the TT-42, uses a 12/30 NST with
a 0.0147uF cap and a sync rotary gap, and gives 42" sparks max.

The coil can be seen at:
   
     http://members.aol-dot-com/FutureT/TT-42index.html

I presently building a small base for the coil which will make it portable.

Cheers,
John Freau

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