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Re: More facts: Coil size to faraday cage size ratio



Original poster: "Jim Lux" <jimlux@xxxxxxxxxxxxx>

Since the signals of concern are fairly HF (i.e. >30 MHz), it would be
interesting to find out where they are coming from.  Is it high order
harmonics from the LC ringdown (unlikely... we're talking VHF frequencies
here, and 100 MHz would be 1000th harmonics of the 100kHz fundamental).
Probably more likely radiation from primary circuits (as Terry had noted
some years back) or from the streamers themselves.

So, maybe something to kill the HF content in the primary circuit (ferrite
cores on the wires to/from the sparkgap?  Have to choose an appropriate
material, so they don't absorb too much energy at the fundamental and
overheat.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, November 23, 2004 9:00 AM
Subject: Re: More facts: Coil size to faraday cage size ratio


> Original poster: "Bob (R.A.) Jones" <a1accounting@xxxxxxxxxxxxx> > > Hi Fin > > Its probably cheaper and less demanding on the each cage to have a double > one. > Two poor performance cages can be more effective than one good one and > possibly two are essential if the inner is going to be in the discharge > path