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Re: [TCML] Hazards of Asynchronious arc gaps?



No I can't, just theory from the mind set that with very high bang voltages, I can only assume more intense transients on the line. It could have certainly been EM fields, but a gut feeling says transients (not that a gut feeling is worth much). BTW, this incident was a distribution transformer running very STR and not an NST, so the voltages at the caps could have been very high quickly.

I must also make a correction of the incident stated. The Xbox360's death was not due to the low bps. The 360 was due to forgetting to hook up an rf ground. So, scratch that one. The sound card was the issue experienced immediately after the low bps. The pc was being used by my son at the time and he was listening to something through the pc speakers. He heard a bit of static and then the music just faded out. Not long after, the pc had many odd problems noticed. I ended up buying a new pc.

Regards,
Bart

Quarkster wrote:
Bart -
Just to be technically accurate, can you provide solid evidence that a low break-rate "intensifies" radiated electromagnetic fields from a TC? It certainly seems plausible that a low break-rate could allow the tank cap to charge to a higher voltage, resulting in a larger "bang size" when the gap finally does fire, and possibly generating higher intensity radiated EM fields and/or AC line conducted transients, but I was wondering if you had any measurement data to support this. Regards,
  Herr Zapp

bartb <bartb@xxxxxxxxxxxxxxxx> wrote:
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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