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Re: Chokes, Caps, and resistance (fwd)
---------- Forwarded message ----------
Date: Wed, 17 Dec 1997 12:02:06 -0700
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: Chokes, Caps, and resistance (fwd)
to: Joshua
Caps are from each bushing to ground -- not after the resistors as you have
them. Yes, resistors are definetely required -- see my other post on this.
Also, run your main sparkgap in parallel with your xmfr output -- not in
series -- very bad.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Chokes, Caps, and resistance (fwd)
> Date: Wednesday, December 17, 1997 8:03 AM
>
>
>
> ---------- Forwarded message ----------
> Date: Wed, 17 Dec 1997 09:39:26 -0800
> From: Joshua Resnick <seraphim-at-WPI.EDU>
> To: Tesla List <tesla-at-pupman-dot-com>
> Subject: Chokes, Caps, and resistance
>
> All,
>
> 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?
> gnd
> _|_
> ---- C
> R L | C L
> ----------/\/\/\/---()()()()------------|----| |---------()()()()()--
> xfmr | spg |
> ---------/\/\/\/\---()()()()------------|----------------------------
> R L _|_
> ---- C
> |
> gnd
> 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.
>
> ____
> /\/\ ((____)) /\/\/\/\ Joshua "Flux Boy" Resnick
> / | | \ \ http://www.wpi.edu/~seraphim
> / | | \/\/\ \ __ http://ece.wpi.edu/~seraphim
> / ____| |____ \
> |||||||||||||| \ "Two parts oxygen and one part
> lovin'."
>