Re: tesla coil grounding

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

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>


>Yes. grounding is NEEDED
>grounding provides a refrence for the output of the tc
>otherwise it does strange things.
>like at the peak of a wave, the bottom will be at say -100kv

>and the top will be at +100kv,

         I would expect otherwise.

>well, the primary capacitance and such will affect it...

         Right.

>actualy. I bet the main toroid capacitance would actually

>make the top be at like 10kv at the bottom be at like 190kv!

         I can't see why.  The stray capacitance of the base
         of the coil(s) to 'ground' will be hugely higher
         than that of the toroid to ground.  This will keep
         the base close to 'ground', rf wise, regardless of
         an explicit ground wire.  (assuming the coil be 'on'
         a casual ground (driveway, concrete floor, etc.)

         Arguably, some risk of the RF 'punching thru' to
         mains ground, if none be provided for the RF.

-- 
         best
         dwp

...the net of a million lies...
         Vernor Vinge
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         -me