Re: [TCML] Spark gaps, Solid state switches and diodes

[FIFTYGUY@xxxxxxx]

In a message dated 2/7/09 9:15:50 P.M. Eastern Standard Time,  
g.peterson@xxxxxxxxxxxx writes:

In order  to accurately define the word "disruptive" as it applies to Tesla
coils we  first have to see how Tesla himself uses the word.  Here are  some
examples found in his lecture "Experiments with Alternate Currents of  High
Potential and High Frequency," IEE Address, London, February 1892  (
http://www.tfcbooks.com/tesla/1892-02-03.htm ).

". . . In the  experiments such as performed this evening, we operate the
coil either from  a specially constructed alternator capable of giving many
thousands of  reversals of current per second, or, by DISRUPTIVELY
discharging a  condenser through the primary, we set up a vibration in the
secondary  circuit of a frequency of many hundred thousand or millions per
second, if  we so desire; and in using either of these means we enter a field
as yet  unexplored. . . ."

". . . Before showing some of these curious effects  I must, for the sake of
completeness, give a short description of the coil  and other apparatus used
in the experiments with the DISRUPTIVE DISCHARGE  this evening. . . ."

My definition of the adjective "disruptive,"  within the context of Tesla
coil technology, relates to the transitive verb  "disrupt."  The word
"disrupt" is the act of breaking down an  insulating medium or dielectric
separating two conducting bodies, by means  of an electrical discharge.  In
Tesla coil jargon the adjective form  of the word is often found as part of
the term "disruptive discharge," as  in "disruptive discharge Tesla coil"
(see for example  http://www.tfcbooks.com/images/lectures/1892-02-03/005.gif
).

Look  at this image:
http://www.tfcbooks.com/images/lectures/1892-02-03/017.gif ,  for an example
of a disruptive discharge Tesla coil transformer being used  to power an
electric motor.  Notice that there are no sparks breaking  out from the high
voltage terminal.






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