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RE: A Puzzle
From: Malcolm Watts[SMTP:MALCOLM-at-directorate.wnp.ac.nz]
Sent: Tuesday, September 02, 1997 11:49 PM
To: tesla-at-pupman-dot-com
Subject: Re: A Puzzle
Hi DR RESONANCE,
> From: DR.RESONANCE[SMTP:DR.RESONANCE-at-next-wave-dot-net]
> Sent: Tuesday, September 02, 1997 9:30 PM
> To: Tesla List
> Subject: Re: A Puzzle
>
> to: Malcolm
>
> A quick suggestion --- measure the distributed capacitance of both
> inductors and compare. The difference in this cap could explain why the
> freqs are similar. Just a thought.
>
> DR.RESONANCE-at-next-wave-dot-net
They most certainly are different. The L x Ctot products are
identical. I think it is boiling down to difference in resonator
losses. The scenario I am going to look for shortly is how different
are the oscillation times between the two. The low voltage unloaded
dynamic Q's are _vastly_ different. The large resonator has a measured
Q of over 300 while the small one is probably less than a hundred (if
memory serves me well).
I am now wondering whether this problem might relate to the
apparent differences in wall plug efficiency I noted in the coil
chart. If so, it is clear that large resonators wound with large
wire have got to be better. This experience suggests so.
?
Malcolm