new member with Tesla coil current question

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

Original poster: "Jack Vandam" <snotoir7674g-at-mindspring-dot-com> 

Hi Folks:

First time posting here and I have just been reading your very interesting
archives!  Although I have been out of high voltage and Tesla coil
experimentation for some time, I may be getting involved once again for a
temporary time.  I have several questions that I'd like to ask about Tesla
coils, x-ray transformers and high voltage supplies.  I won't ask them all
at once as not to overwhelm, so I'll just ask about Tesla coils this
evening:

How much current can be pulled from a Tesla coil without excessive voltage
drop?  I know this is a very general question, but to be specific, if anyone
is familiar with the small coils that Science First produces (50 Kv max),
that is the kind I am talking about.  If I were to feed the output from that
into a shielded enclosure containing a small dental x-ray tube, and then
apply filament voltage to the tube, approx. how much available current could
I expect?

Thanks to all, in advance, who respond.

Jack Vandam