LCR Protection filters

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

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