"Arthur Conan Doyle" wrote in message
news:n1ff2el7b5fc6megbeihv069t05gouso10@None...
"William Gothberg" wrote:

Why is it called an invertor?

Typical microwaves use fixed AC power to drive the magnetron. Inverter
driven
magnetrons use DC power, which can be variable.

Pulse width modulation, actually.

https://en.wikipedia.org/wiki/Microwave_oven