Re: Toploads that bite

• To: tesla-at-pupman-dot-com
• Subject: Re: Toploads that bite
• From: "Herwig Roscher" <herwig.roscher-at-gmx.de> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Sun, 13 Feb 2000 11:38:15 -0700
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

> > You might want to include a safety gap (with a series resistor) in
parallel to the cap.The series resistor is essential in order not to
exceed the maximum current of the cap in case of a flashover.

Nick Field wrote:

> Don't use a resistor - use a coil of 14guage wire - the resistor will 
not handle the voltage or current unless you use a huge bank of 
power resistors.

Nick,

- A coil having got several turns of course will limit the peak 
current. Drawbacks are mounting space and the menace of 
oscillations. In my system I've used 34 Ohms consisting of two 
paralelled 68 Ohm/100 W resistors. They are long enough to 
handle the voltage as well.

> I personally advocate discharge resistors (note I said 'discharge' not
> 'equalising') across all the caps
- Every single cap of the MMC has got its 10 MOhm bleeder of 
course. 10 MOhm is much to high to act as an equalizing resistor.

>  I would also say to people that they should *physically* connect 
the buss bars with a clip lead while working on a tesla coil cap.
- I agree if the cap was discharged before.

Regards		Herwig

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