jim evans wrote in
news
On Thu, 25 Sep 2008 01:43:13 -0400, Boden wrote:


There is no cathode ray tube in a microwave oven...klystrons or
magnetrons are typicaly used.

Suit yourself. A high power vacuum tube then.

Also, they don't "generate" power.

OK -- The high power vacuum tube at the heart of a microwave gradually
uses itself up and unit puts out less and less power as it grows
older. Also, modern microwaves output more power to begin with than
older units did when they were new.

Happy now?


modern microwaves output more power to begin with than older units
did when they were new. Happy?


the cathode emission drops with age;that is the reason for a drop in power
output.

--
Jim Yanik
jyanik
at
kua.net