Re: Permanent magnet Tesla coil

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: robert heidlebaugh <rheidlebaugh@xxxxxxxxxxxxxx>

An automobile alternator uses high frequency power generated by a single dc
powered electro magnet, similar to a perminate magnect with a ring of pole
forming points meshed together like saw teeth. As the rotor turns the
magnetic poles are changed at a high rate with a 1k to 6k rpm turned by a 1k
rpm engine. Multaple stator coils provide even higher frequency 3 phase
output. Just replacing the rotor coil with a perminate toroid magnet and re
connect the stator coils to single phase would give you a good test model to
start research with low project  initial cost.
      Robert   H
--


> From: "Tesla list" <tesla@xxxxxxxxxx>
> Date: Fri, 19 Aug 2005 08:54:50 -0600
> To: tesla@xxxxxxxxxx
> Subject: Re: Permanent magnet Tesla coil
> Resent-From: tesla@xxxxxxxxxx
> Resent-Date: Fri, 19 Aug 2005 08:57:26 -0600 (MDT)
>
> Original poster: Brady Hauth <bhauth@xxxxxxxxx>
>
>> Read about the Alexanderson alternator for a way of
>> generating high frequencies with relatively sane RPMs.
>> Tesla owned some alternators like these and used them
>> to drive his coils, so it's not a new idea.
>
> Thinking about the original idea some more I figured that one might be
> able to work such a system by using a ring of magnets inside the inner
> diameter of a toroid wrapped with wire that switches direction every
> turn. Very small magnets and very good alignment would be needed, but
> 200kHz would be possible for a high-grade one. I presume Alexanderson
> alternators worked on a similar principle, although no schematics pop
> up on google immediately.
>
>