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Subject: Re: Tesla coil question
Date: Sat, 30 Nov 2002 19:07:25 +1300
Organization: Attica Communications
NNTP-Posting-Date: Sat, 30 Nov 2002 06:07:31 +0000 (UTC)
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Kevin McMurtrie wrote:
> In article <3DE816FC.F00A605B@NAESPAM.yahoo.com>,
> tom wrote:
> >I was reading
> >and a few thoughts crossed my mind.
> >the Tesla coil it appears works a bit like a radio. To get a changing
> >field in the
> >primary simple breakdown seems to be used ie a spark gap and this
> >power in the secondary. I take it that the frequency of the secondary
> >just depends
> >on the LC of the secondary ie what the centre frequency is? Also the
> >must be quite broadband for their being enough power to be picked up in
> >first place but it is a spark transmitter so I suppose that explains it.
> >Does anybody use an oscillator in the primary instead of a spark ie a
> >frequency oscillator a bit like use in an invertor but variable
> People try but it's very hard. A _LOT_ of power needs to be pumped into
> a primary coil that's a short loop of copper pipe. The frequency needs
> to be just right and you need plenty of shielding on the inverter. I
> tried once and blew a handful of MOSFETs without making more than a few
> KV on the secondary.
Maybe Thyristors can be used?
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