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Re: Tesla Coil Tuner
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Sunday, November 09, 1997 5:45 PM
To: Tesla List
Subject: Re: Tesla Coil Tuner
Hi Ted,
> From: Ted[SMTP:tedric-at-generation-dot-net]
> Sent: Sunday, November 09, 1997 10:29 AM
> To: tesla-at-pupman-dot-com
> Subject: Tesla Coil Tuner
>
> Hi all,
>
> I guess everybody know about this tesla coil tuner that is sold by
> Information Unlimited. With a prices tag of $79.50 + S&H, I find it is
> unresonable. Does anyone know how it works or has a circuit diagram about
> this or some similar devices? I believe everybody on the list will be
> interested. Thanks in advance.
Use a low impedance signal generator and scope. For the secondary,
base feed the resonator from the generator and hang a short pickup
wire from the scope probe a few feet away.
For the primary, short the gap and feed the generator across the
cap/coil with a resistance of 10 - 20k in series with the generator
(to save excessively loading the tuned circuit). The scope can be
hooked directly across the cap/coil.
Both the above should be done with the other tuned circuit well
away from the one under test.
Someone asked yet again about calculating Cself for a secondary
coil. I have posted the formula no less than half a dozen times
(twice in the last month alone). Check in the list archives. Keyword -
Medhurst.
Malcolm