Re: [TCML] Never Work With Children, Chemicals or Tesla Coils

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

On 12/27/12 7:17 AM, Colin Tregenza Dancer wrote:
> For my sins I provided the coil and Jacob's ladder were mine.  I've known Pete (the lecturer) for 25+ years and when he wanted lightning he knew I'd be pleased to help.

You are certainly following in famous footsteps...

I wonder what Nikola himself used when he did his demo on Feb 3&4, 1892

http://www.teslauniverse.com/nikola-tesla-article-tesla-at-the-royal-institution

And, given that electrical appliances were pretty rare in 1892, I'll bet 
he didn't have problems with video cameras, and theatrical light 
controllers.



He too used an oil insulated transformer:
"Mr. Tesla said the transformer used by him was provided with oil 
insulation, the exterior of the primary coil being about one-quarter 
inch less in diameter than that of the internal diameter of the tube 
upon which the secondary was wound, and the annular space filled with oil."

and it looks like he was running at 100 kHz
"...alternations amounting to the almost inconceivable number of 100,000 
per second are, according to Mr. Tesla, essential."

ALso reported earlier at
http://www.teslauniverse.com/nikola-tesla-article-mr-tesla-before-the-london-institution-of-electical-engineers-and-the-royal-institution

I wonder if the "induction coil" referred to in the following passage is 
the air core transformer we are all familiar with, or the more 
conventional induction coil with an iron core (the Model T ignition 
coil, for instance).

"He showed first an induction coil operated by condenser discharge. With 
this coil he produced various remarkable discharge phenomena. Among 
others he imitated the spark of a Holtz machine and showed a brush 
discharge covering an area of something like 4 or 5 square feet, and 
also a luminous wire outlining the name of William Thomson. "
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla