> On Jun 13, 2016, at 12:55 PM, Rod Smallwood <[email protected]> > wrote: > > > > On 13/06/2016 17:20, Rod Smallwood wrote: >> >> >> I just had a thought is the magnet in a microwave cooker magnetron permanent >> or electro?
> Back in 1960's the guy who I worked for had been in radar during the war. > We had several magnetrons about the place. They had a very strong permanent > magnet. > > He always said when the Germans recovered a magnetron from a crashed bomber > they soon worked out how it oscillated at 10Ghz but making the magnet was > beyond them. > > Rod I suspect the working area in a magnetron is too small for this purpose, unless you break it up. A rare earth magnet savaged from a disk drive or a banned child toy (aka BuckyBalls) might be more effective. Jerry
