Re: [TCML] Power Factor Correction

["Phillip Slawinski" <pslawinski@xxxxxxxxx>]

How do I know what direction to go with capacitance?  I'm running the NST
with my Jacobs ladder to find the right value.  So far I've only found the
wrong value, and the very wrong value.  Turns out if you get it wrong you
actually increase [dramatically] the amount of current being dumped into the
NST.  I was running it and all the sudden the aspahlt I neglected to remove
between the core and the HV windings bubbled up from the oil.  When I run
without the PFC caps I'm drawing about 15A, with the caps I was pulling peak
currents of 35A!  If I'm increasing current does that mean my capacitance is
too high or too low?

On Mon, Jul 14, 2008 at 11:58 PM, bartb <bartb@xxxxxxxxxxxxxxxx> wrote:

> Javatc is giving a basic calculation for PFC based on the transformers
> specs. This is only a ball park number. You must experiment to find the PFC
> that works best for your coil. Does you coil have a variac control, external
> current limiting, etc.. etc.. Experiment is the only way to find the "good"
> value for your coil.
>
> Take care,
> Bart
>
> Phillip Slawinski wrote:
>
>> I just scored 20 GE Dielektrol VI caps 10uF at 370V AC @ $0.10/piece.
>>  These
>> should be good for PF caps.  I'm wondering what size PFC cap I should use
>> for a 15/120 NST.  I've noticed that the value suggested in JavaTC for a
>> 15/60 seems to be twice that of what others [notably Gary Lau] use.
>> _______________________________________________
>> Tesla mailing list
>> Tesla@xxxxxxxxxxxxxx
>> http://www.pupman.com/mailman/listinfo/tesla
>>
>>
>>
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
>
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla