Re: MOT supply problem

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <A123X-at-aol-dot-com>

The inductive ballast doesn't seem to lower the voltage, I ran the 7500v 
transformer off the same thing as the MOT supply even though it's an NST and 
doesn't need any extra ballasting but it didn't affect it's voltage output. I 
think that the other person who replied saying that the problem might be 
caused by the voltage and current getting out of phase was right. I added a 
single 25uf cap accross the MOT input's for PFC and it has improved they're 
performance. A gap that they couldn't jump with full 120v input can now be 
jumped with only 100v input.

Mark

In a message dated 8/26/02 2:35:56 PM Eastern Daylight Time, tesla-at-pupman-dot-com 
writes:

<<  Hi Mark-
     You mention you are using an inductive ballast-- What is the voltage at
 the primary of each MOT?
 All the MOTs I have pull close to 5A with no loads connected. If you have
 four of these connected in parallel (120V) you are already at 2400VA. Your
 ballast may be limiting the primary voltage to less than you expect at the
 MOT primaries.
 $.02...
 db >>