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Re: Tesla Coil toroid Size
<snip>
Richard,
This is no doubt the first time I've seen an actual
plausible reason for the longer arcs! In order to
"cause" the ion lifetimes to exist longer than the
interval between pulses, wouldn't it be "prudent" to run
a RSG with DC to vary and find the "critical value"? I'm
using a sync rsg. The only way to increase/decrease bps
is to add/remove electrodes either stationary or
rotating. DC does seem to be an advantage for longest
arc possibilities due to the adjustment factor. I know
this is far off John C.'s intention for this post, but I
just had to ask.
Bart
> In any fixed system, once the BPS hits some critical value for the enrgy per
> pulse and has a nice field control via a large toroidial top load, the ion
> lifetimes are longer than the interval between pulses. The channel will
> grow to
> longer lengths with a specific input energy rather independent of voltage
> over a
> narrow range. Thus, an attached long hot arc may remain attached for
seconds
> while the Q of the coil is sinking to near zero along with the idealized
> terminal
> voltage!!!
>
> This is a commonly observed air pressure arc phenomena. 120 volts will not
> arc
> over even a fraction of a millimeter, yet carbon rods might form a drawn
> arc once
> momentarily connected and then separated of 6-8mm! It is the ions in the
> hot arc
> that keep the arc going not the voltage across the arc which might now only
> be 20
> volts provided suitable heater balasting is supplied.
>
> The lowering of the base impedance by the toroid even with attendant Q
> reduction
> is far more valuable to longer arcs than any voltage maximum achieved on the
> system terminal by large Q. The highest Q systems have no Toroid! They
also
> produce abyssmal performance and can't ever handle any real power. Also,
> field
> shaping and control afforded by a large terminal are most benificial in
> allowing
> small resonators to perform amazing feats and handle huge energy levels.
>
> You tell 'em Greg!
>
> Richard Hull, TCBOR