RE: Safety gap resistor?

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

Original poster: "Ted Rosenberg by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Ted.Rosenberg-at-radioshack-dot-com>

Kevin:
Each of the caps in the series/para strings <however you have them arranged>
has a 10Mohm, 1/2 watt resistor across the cap leads.
So, in my case, I have 20 .047 mF in series per board and 5 boards in
parallel for a total of .0117mF See
http://www.flash-dot-net/~ford29/tesla/mmc01.jpg
You can easily see the resistors on the back of one perf board across each
cap.
That's 100 caps total. And 100 resistors.


Hope this helps.

Safety First

Ted

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Sunday, August 05, 2001 6:13 PM
To: tesla-at-pupman-dot-com
Subject: Safety gap resistor?


Original poster: "The Big Giant Kevin by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <neo4s-at-hotmail-dot-com>

>Do you current limit your primary to keep the discharge current from
damaging your cap?
>I have NEVER seen a cap destroyed by a safety gap yet. I HAVE however
seen many caps go to the great beyond for the lack of a safety gap!
>The first question I ask someone who has just blown a capacitor is "were 
>you running a safety gap on the cap?", and almost invariably the answer is 
>no. I personally will use a safety gap every time!



Someone please straighten me out on this! It makes since to use a current 
limiting resistor for the MMC caps, but... WHERE should I put the resistor? 
Are we talking about the resistors in the Terry filter (that I am using), or

should there be another resistor in series with the cap gap, or a resistor 
in series with the primary coil? And if so, WHAT value and wattage resistor 
should I use? Save my caps! Kevin

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