RE: Higher input voltage

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "John H. Couture" <couturejh-at-mgte-dot-com> 


Three scientist in 1930 used 70 Kv for their 5 Mv Tesla coil. The spark
length should increase by the square root of the voltage according to John
Freau's equation. That is the square root of watts or volts times current.
That assumes you will have the proper insulation conditions for the high
voltage. With Tesla coils always keep in mind that the spark length will be
based on

    Spark length = Input watts minus the losses.

However, this may not be entirely correct. Because of the intermittent TC
operation the power factor appears to be much more important than previously
considered. Power can be magnified, power factor can not! Have any coilers
researched the effects of power factor upon the spark length or TC output?

John Couture

---------------------------


-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Saturday, December 06, 2003 2:43 PM
To: tesla-at-pupman-dot-com
Subject: Higher input voltage


Original poster: "Jeremy Gassmann" <gmann-at-fuse-dot-net>

      I just had a quick question.  I look at a lot of the designs out there
and I see that most people use NST's up to 15 kV, or lower voltage MOT's,
or pole pigs around 15 kV as well.  My question is, has anyone ever
designed a coil with a larger input voltage than 15 kV?  Maybe using 30 or
40 kV or even higher.  Is there a reason that most people don't go much
higher than 15 kV of input power?  Is it due to the availability of such
high voltage sources or more of the complexity involved in engineering TC
components to withstand the higher voltages?  Thanks in advance!

Jeremy Gassmann
Cincinnati, Oh
<http://jeremyee.tripod-dot-com>http://jeremyee.tripod-dot-com