Re: [Phys-l] Q of microwave oven "cavity"

[brian whatcott <betwys1@sbcglobal.net>]

On 4/28/2011 1:13 AM, Bernard Cleyet wrote:
> My intuition is that it's so low the E field becomes max. at about the same time the cathode is "up to temp."  even w/o a load.
>
> No?
>
> bc will post the reason for his request after an answer.
>
> p.s.  Is it possible to synchronize magnetrons?
It has been customary to preheat indirectly heated magnetron cathodes 
for microwave use.
Magnetrons have internal resonant cavities. The external oven cavity, 
even if its Q
were in the hundreds of thousands, would stabilize in milliseconds.

Magnetrons feature mode straps which are intended to keep the internal 
cavities in mode lock.
Some specialized magnetrons can inject a signal to synchonize its output.

Brian W