Re: Magnetic Rectifier??

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

> I don't see a solution with only inductors and capacitors, no matter how
> nonlinear they are. An inductor is just a short-circuit for DC, and a
> capacitor an open circuit. Without diodes (including in this all
> nonlinear resistors, mercury rectifiers, corona rectifiers, etc.),
> there is no practical way to make a rectifier that can charge a
> battery from an AC source.
> A possible solution is to use switches, synchronized with the AC signal.
> This is what is done in a rotary DC generators, with mechanical
> switches.
> The switches act as diodes, or diode bridges.
> 
> Antonio Carlos M. de Queiroz

	OK, just what I thought.  Some form of rectifier is still required, and
to rectify the terminal voltage of a Tesla coil it would have to operate
at the full voltage, considering the inverse voltage too.  Synchronous
rotating switch rectifiers were at one time used to provide the DC for
smoke-stack dust and smoke precipitators, but were huge sources of
interference during the early days of broadcast radio (circa 1921-1922)
and disappeared long ago.  They operated at voltages in the range of a
few tens of kilovolts, not hundreds.  Of course, to rectify the high
frequency output of a TC would require a pretty high rotational
rate!!!!!!!!

Ed