"Ron D." wrote:

Percent power may not be related to actual duty cycle. 50% is not 50%
on and 50% off. The ON time may be longer based on service info for a
Sharp Microwave, It takes time for the filament to warm up and there
may be reduced or no output. This is taken into account.


Which still results in a 50% on to off output from the Magnetron.
Just how long do you think it takes for the filament to reach full
operating temperature? We aren't talking about 12 volt tubes with 150
mA filaments that take ten seconds to warm up.


--
It's easy to think outside the box, when you have a cutting torch.