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Re: 1/4 wave theory
Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>
Tesla list wrote:
>
> Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<evp-at-pacbell-dot-net>
>
> Tesla list wrote:
> >
> > Original poster: "McQuay, Michael by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <Michael.McQuay-at-wcg-dot-com>
> >
> > >From what I've gleaned from the list so far, I fear I may be about to
start
>> > a holy war, but I'm going to ask anyway.
>> > Is it advantageous to design a coil such that the linear feet of
>>>wire in the secondary is equal to 1/4 of the operating wavelength?
> Simple answer is NO!
Tend to concur.
But.
I suggest that is only half the question.
The other half is:
Should the secondary resonate as an electrical
1/4 wave?
(Note that THIS is a separate question. And exceeding hard
to predict numerically, as it depends among other things,
on the aspect ration (length/dia) of the coil. ).
Opinion on this seems divided, some saying 'yay, some nay.
I tend towards:
Secondary should resonate.
The tricky bit seems to be to predict this, or to figger
a way to tune a secondary. Or to retune the primary to
match the secondary, which is more or less fixed, once built.
best
dwp