Re: Current limiting (newbie question)

• To: tesla-at-pupman-dot-com
• Subject: Re: Current limiting (newbie question)
• From: "Alex Crow" <alexcrow-at-clara-dot-net> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)
• Date: Wed, 10 May 2000 13:57:15 -0600
• Approved: twftesla-at-uswest-dot-net
• Delivered-To: fixup-tesla-at-pupman-dot-com-at-fixme

Ben,

Are you actually going to use the coil as a supply transformer for another
tesla coil? I don't think it would work very well as it is a pulse
transformer - actually no eeven a real transformer as it is designed to have
high inductance (ie the core is open, not closed!) If you are going to use it
as a tesla coil per se, I suggest you read all the docs and faqs you can find
on tesla coils, and look up "GMHEICSLR" on the list archives!

Take care!

Alex


Tesla List wrote:

> Original Poster: "B Marshall" <bm-at-bens-stuff.fsnet.co.uk>
>
> I am planning on building a small tesla coil out of a car ignition coil.
> Because the coil won't
> be able to handle a large amount of power (my guess is between 50 and 100
> watts), I will need to
> limit the current going in. I have measured the resistance of the primary,
> which is 20 ohms.
> Therefor, at 240v it would draw 12 amps, using ohms law. If I wanted to
> limit it to say 60 watts,
> I would need to limit it to 0.25 amps. 240/0.25 = 960 ohms, so I assume
> that I would put a 1k,
> 60w resistor in series with the primary. Would this work, or have I got
> this totally wrong?
>
> Thanks,
> Ben

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