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RE: Stupid Idea, Maybe?

Original poster: "Lau, Gary" <Gary.Lau@xxxxxx>

The use of two toroids helps prevent primary strikes by allowing the
main discharge toroid to be raised above the top of the secondary (i.e.
further from the primary).  The lower toroid serves only to prevent
corona off the top of the secondary.

It's difficult to predict without trying it if your bowl will provide
adequate corona protection.  It may, but it sets a limit to how far
above it the main toroid may be located.

The other thing I would mention is that your 8.5x39" secondary is
substantial in size, suggesting a moderately powerful power supply.  But
your main toroid seems rather small by comparison.  There is no
agreed-upon rule of thumb for sizing the top load, but typically the
length of the secondary is comparable with the major diameter of the
toroid.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Tuesday, August 02, 2005 3:30 PM
> To: tesla@xxxxxxxxxx
> Subject: Stupid Idea, Maybe?
>
> Original poster: "Mike Knowlton" <amdx@xxxxxxxxxxx>
>
> I posted a letter about my topload idea and didn't
> get any feedback. I'm wondering if this design will
> help prevent the discharge to primary as a double
> toroid design does. If you see it as a poor idea please
> let me know.
>
> Here's my original letter:
> I'm working on a topload toroid for my 8.5in x 39in TC.
> I see some with a double toroid, I'm wondering if a bowl
> supporting a toroid would have a similar effect.
> Please see pictures at
>
<http://www.knology.net/~amdx/>http://www.knology.net/~amdx/
>
> If this seems acceptable I'll dress it up with aluminum tape.
> What is your feedback?
>
> Thanks, Mike K.
>