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Re: Are those dumb questions?
No they're certainly not dumb questions. There are people who are better
able to answer them than me, but if you don't ask questions you can make
expensive, not to say dangerous, mistakes.
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 12, 1999 7:18 PM
Subject: Are those dumb questions?
> Original Poster: "***Samuel Rosset***" <samr-at-bluewin.ch>
>
> Hi everyone!
>
> I am going to start building a new coil, but this time, I really want to
> understand every aspect of the coil, and I started by refreshing my
knowledge
> about RLC circuits, and by reading a lot of stuff on that subject. So far,
I
> have tons of question, and here are the most important ones:
>
> I read that a common way of starting was to find the capacitance value for
the
> tank circuit, in order that the impedance of the cap cancels the one of
the
> transformer. Then you build your secondary and find its resonant frequency
and
> finally, you build your primary to match the frequency of the secondary.
My
> reflex would have been to finish by finding the capacitance value, and to
take
> a capacitance value in order that the impedance of the capacitor would
cancel
> the one of the transformer AND the one of the primary coil, but this is
> obviously wrong, why?
>
> I also read that a higher breaking rate of the spark gap increases the
amount
> of power in the coil. But does the braking rate of the spark gap influence
the
> frequency of the tank circuit? I thought this would, because at each
breaking
> the current changes direction and charges/discharges the caps. But the bps
is
> not included in the calculations to find the primary frequency, for one
uses
> the formula omega=(Lprim * Cprim)^-0.5. in clear my question is : Is the
bps of
> the spark gap and the frequency of the primary related (which would mean
that I
> need to find the right bps to reach the reasonnant frequency between
primary
> and secondary) or isn't there any relation?
>
> I want to limit the power of the TC at 1.8KV, which means 8 amps drawn on
the
> house sector. How can I achieve that on a non-current limited transformer.
(a
> resistor of 27.5 ohm??? but at 8 amps, that means that the 1.8KW are
wasted
> here and nothing for the coil... Where is the mistake?)
>
> You might think that those are dumb question, but You would really help me
if
> you could answer some of these questions, because it would help me to
really
> understand how a TC works. And I already thank all of you who will bring
the
> light to my brain... Thank you very much
>
> Samuel
>
>
>