Re: Chokes, Caps, and resistance (fwd)

---------- Forwarded message ----------
Date: Wed, 17 Dec 1997 13:49:04 EST
From: Esondrmn <Esondrmn-at-aol-dot-com>
To: tesla-at-pupman-dot-com
Subject: Re: Chokes, Caps, and resistance (fwd)

In a message dated 97-12-17 10:35:04 EST, you write:

     While still in the hunting, gathering, and planning stage for my
 coil I think this is the perfect time to ask questions about the low
 pass filters and other components that I need to attatch to my xfmrs.
 It is my understanding that the only reson for the chokes is to "block"
 any RF coming back from the tank from getting into the xfmrs.  It is
 also my understanding that a pair of properly rated doorknob type caps
 after the chokes should be used to act as a high pass filter allowing RF
 to go to ground.  I also  hear talk of resistors in the TC circuit.  Are
 these used to spoil the Q of any resonance that might develope between
 the transformer and the capacitor? Or are they there to damp the tank
 itself (this doesn't make sense though!)?  If they are there to damp any
 potential resonance between the cap and the xfmer then would they also
 be placed on the legs of the transformers,
 so the circuit would look like this?
                                  ----  C
               R          L         |          C                L
 ----------/\/\/\/---()()()()------------|----| |---------()()()()()--
  xfmr  |                               spg                          |
             R           L         _|_
                                  ----  C
 Another question that comes to mind is that if I'm not using neons, do I
 even need resistance at all?
 Any advice would be appreciate.

I would move the bypass caps so they are connected directly to the output
bushings on the transformer.  As to your last question, I am still working on
that myself.  I think the answer is it depends on each system since each is
different.  It won't hurt anything to include the resistors regardless of the

Ed Sonderman