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Re: Capacitors and Frequency
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To: tesla-at-grendel.objinc-dot-com
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Subject: Re: Capacitors and Frequency
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From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
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Date: Thu, 26 Oct 1995 13:18:44 +1200
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>Received: from rata.vuw.ac.nz (root-at-rata.vuw.ac.nz [130.195.2.11]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with ESMTP id SAA29007 for <tesla-at-grendel.objinc-dot-com>; Wed, 25 Oct 1995 18:20:30 -0600
Marcus Young wrote...
>
> How about coils with very low operating frequencies(Lets say 20kHz with
> terminal capacity)
What sort of inductance are you considering ? Capacitance ?
With a coil like this you could achieve very high L/C ratios
I would think.
> Will such coils cause much less stress on dielectrics ?
Some, but it depends on the type of plastics you are going to use.
Some are relatively insensitive to frequency, others aren't. Ed
Harris produced an excellent table of dielectric characteristics
a while back. I can mail you my copy if you like. Generally most
should be O.K. at this frequency.
Ultimately it's going to depend on power levels you'll operate
at (as always).
> Will the additional inductance of such coils cause problems ?(apart from the
> wire cost) :)
I would think that you'll be trading off wire thickness and inductance
in a big way to keep coil size reasonable. What kind of coil size are
you looking at ?
Malcolm