Re: Magnetically controlled spark gap for Wireless Transmitter

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Original poster: Ed Phillips <evp@xxxxxxxxxxx>


Does anybody here have experience working with the magnetically controlled
spark gap mentioned in this article?
http://www.iop.org/EJ/abstract/0950-7671/40/9/118

I'm building one for my wireless power transmission project and was curious
as to why nobody else seems to have noticed this.  Essentially, the spark
gap is a concentric cylinder copper spark gap that serves as the core of an
electromagnet.  The electromagnet is pulsed at the desired break rate.
According to the article, this particular gap arrangement also works as a
diode for rectifying the current."

Dave:

   Couldn't reat the article, only the too-brief abstract.  How did 
you get access to it?  Not enough information there to understand 
anything about it.  One of the puzzles is as to what they mean by 
transverse field and what the resultant electron trajectories might 
be.  There have been a lot of devices using coaxial electrodes and 
AXIAL magnetic fields for use as switches - that was one of the 
original uses Hull proposed for the magnetron.

   It would be interesting to do a Google advanced search on 
"switches" and "crossed field".

Ed