RE: LCR Protection filters

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

Original poster: "Basura, Brian by way of Terry Fritz <twftesla-at-qwest-dot-net>" <brian.basura-at-unistudios-dot-com>

It's a foil covered ball with a breakout point. He's working on a toroid...

Regards,
Brian B.

 -----Original Message-----
From: 	Tesla list [mailto:tesla-at-pupman-dot-com] 
Sent:	Friday, October 05, 2001 11:42 AM
To:	tesla-at-pupman-dot-com
Subject:	Re: LCR Protection filters

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<ludev-at-videotron.ca>

Hi Terry, list,

May be we can check what they used in arc stabilized welder, many
used a small kind of tesla to surimposed a high voltage high
frequency current to the low voltage high amp. low frequency
current but they  need to prevent the high frequency from
entering the main transformer especially for modern equipment
were they used a lot of triac and mosfet an other thing they need
to put a return path for the high frequency current. In some
circuit I saw a caps in parallel with the main transformer with
or without a resistance and 2 inductance between the trans. and
the cap.

If my memory is good in one of your paper you tested a similar
circuit with a mix result the RC circuit seem to perform better.

Cheers,

Luc Benard    

Tesla list wrote:
> 
> Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>
> 
> Hi All,
> 
> Just when you think it is safe to write off chokes in protection filters,
> :D  I should mention that if you place a resistor across the choke coil so
> as to critically damp the LC's natural frequency, you may have a good
> filter.  This was from Dr. Cadd's father's notes.  I did a little study of
> this and it looked like it would work perfectly well.  The resistor
> absorbed the "ring energy" much like in the RC configuration.  I think the
> LCR would be more complex than the RC configuration, but the LCR circut
> should work...  It may have better cutoff and other advantages but it
> really is not well studied... (yet...)
> 
> Cheers,
> 
>         Terry