In article ,
Pete C writes:
On Thu, 14 Jul 2005 17:38:35 +0100, Martin Angove
wrote:
An interesting statement that. Of course you are aware that 1000W
microwave output usually translates into about 2000W absorbed energy, in
which case, presumably the "full size" US units you refer to have to be
specially catered for rather than just plugged into a standard circuit?

Sounds a bit unlikely, a 1kW microwave at 50% efficiency would also
generate the same heat as a 1kW fan heater! That would require a lot
more ventilation than they appear to have.

Original magetrons were only 50% efficient.
Over the last few years, I think this has improved,
but there was also a change in the way microwave
output power was measured, which makes them look
better than they used to look, for no actual change.

The waste heat comes from the magnetron, and in
simple (non-combination) ovens, it was often blown
through the oven compartment to help with the food
heating.

--
Andrew Gabriel