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Forums
4hv.org :: Forums :: Tesla Coils
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Old and new Tesla coil (help!)

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Patric
Sat Jun 05 2010, 08:21AM
Patric Registered Member #2899 Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
radiotech wrote ...

I think yes, but then it is not called a Tesla transformer any more"

Oudin coils work on 50 Hz and produce a nice brush discharge
which works great for seeking leakage points in high voltage motors without destroying anything.

Tesla had a bad name, since he allowed the US Navy to swipe
Marconi's patents which held fast in the 'civilized world'.

I searched the internet, and did not find anything at low frequency... Can you put me in the right direction? The PL105 is such a beautiful tube... smile
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Patric
Sat Jun 05 2010, 08:27AM
Patric Registered Member #2899 Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
radiotech wrote ...

"And there were other Americanisms like micromicrofarads (spelled mmf or µµf at random) instead of pF, and a strange allergy to nanofarads."

darn it. Just when I was getting comfortable with terms Jars and Mics



Not so bad if it is divisible by 10, 100 or 1000... But those mad inches and feet... cheesey
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Proud Mary
Sat Jun 05 2010, 09:15AM
Proud Mary Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Patric wrote ...

radiotech wrote ...

I think yes, but then it is not called a Tesla transformer any more"

Oudin coils work on 50 Hz and produce a nice brush discharge
which works great for seeking leakage points in high voltage motors without destroying anything.

Tesla had a bad name, since he allowed the US Navy to swipe
Marconi's patents which held fast in the 'civilized world'.

I searched the internet, and did not find anything at low frequency... Can you put me in the right direction? The PL105 is such a beautiful tube... smile

I'm sure friend radiotech means 50Hz as the frequency of commutation in the primary, and not the resonant frequency of the secondary, which would have to be truly enormous, reaching up into the sky like Jack and the Beanstalk. smile

Ferrite pulse sharpeners are sometimes used to reduce the rise time of thyratron pulses and Marx pulses too. The sharpening device may take the form of a ferrite-loaded coaxial transmission line with flowing oil dielectric to keep temperature down. This isn't a subject I know much about, but there are plenty of references to ferrite pulse sharpeners on the web.

So even very high power pulses can be sharpened - but at a cost in preparation, parts and labour.
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Patric
Mon Jun 07 2010, 03:31PM
Patric Registered Member #2899 Joined: Wed Jun 02 2010, 06:31PM
Location: Deinze, Belgium
Posts: 255
I think I will stay with my TB500 tube, maybe the PL105 can be used as a power regulator for it. Thanks...
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