RE: [TCML] Hazards of Asynchronious arc gaps?

["Lau, Gary" <Gary.Lau@xxxxxx>]

Bart wrote:
> The em fields are intensified as are the nasty transients

The only thing different about using a low BPS rotary gap is the cap is likely to charge to a higher voltage than is normally safe, and when the gap does fire, it will simply be a bigger bang.  I don't know that EM fields are commonly the source of household damage, but everything will simply scale by the bang size.  Same with the transients.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of bartb
> Sent: Tuesday, August 12, 2008 9:51 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Hazards of Asynchronious arc gaps?
>
> Not only sync rotary's for NST's, but also ensure bps is at least 100.
> Low bps can really cause some unexpected problems.
>
> The em fields are intensified as are the nasty transients, so other
> components around the house can be killed as well when running low bps
> on a rotary or even async. I've mentioned this in the past. I killed an
> xbox-360 and a sound card in the pc simply by slowing down the rotary
> for only a moment (maybe 10 seconds). The firing during that time was
> very erratic and I immediately increased speed (I just wanted to see how
> the coil would react at low bps). It was later that I realized the
> damage incurred. The damage and the out-of-the-ordinary low bps is no
> coincidence.
>
> By running async and/or low bps, all kinds of high voltage damage can
> occur to your components. This is not like single shot mode where the
> single shot is a one time event. Low bps is like many single shot
> situations without voltage control. The voltages "will" climb to values
> which the NST and cap may not handle. And as mentioned, other things in
> the house can be affected as well.
>
> It's really good learning experience however.
>
> Bart

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