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Re: 3/4 wavelength secondaries
Tesla List wrote:
>
> >From huffman-at-d0tokensun.fnal.govFri Jul 26 11:36:06 1996
> Date: Thu, 25 Jul 96 08:53:02 CDT
> From: Dave Huffman <huffman-at-d0tokensun.fnal.gov>
> To: tesla-at-pupman-dot-com
> Subject: Re: 3/4 wavelength secondaries
>
> Hi All you coilers,
> >snip>>
> > I think this thread might be blowin' in the wind a bit.
> > My original finding was that you cannot make a helical resonator
> > resonate at a frequency such that its wire is 1/4 wavelength long at
> > that frequency without adding some additional capacitance. I know that
> > electrically a bare coil does the full 90 degrees at its natural
> > frequency but that ignores the length of the wire used to make it.
> > To date I've not been given a single example of a coil which meets
> > the f and wirelength conditions without a terminal and can only
> > assume that my finding stands. My personal opinion is that it really
> > doesn't matter but others may have different views.
> >
> > Malcolm
> >
> This is probably a real dumb one, but what the hey.
> Has anyone made a straight wire resonator, or maybe one big single
> turn? There must be a half mile of electric fence around someplace.
> Of course the opposite would be true if we transmitted wireless power,
> a half-wave bridge might look pretty neat in the dark.
>
> I disavow any knowledge of my actions.
> dave huffman
Dave
I think you will find that the Corums builty a uhf/microwave unit in
which the secondary was a straight piece of wire. It made sparks too.
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