On 15 Jul 2005 07:28:19 -0700, wrote:

Pete C wrote:

No microwave is 80% efficient. The invertor might be, but the magnetron
isnt, and the oven as a whole isnt. Apart from invertor types, all are
50% efficient,

Bit of a sweeping statement, that...

but the newer IEC rating system makes it appear that
output powers and efficiency have gone up: they havent. Think of them
as like PMPO power ratings.

Sounds interesting, do you have any web references?

cheers,
Pete.