True. Unless you spend the extra money and get a microwave with an inverter.
This is the way
What’s a microwave with an inverter do?
So a regular microwave turns the magnetron on and off for varying periods of time. Like if you wanted a minute at 50% power, it might turn the magnetron off for 10 seconds, then on again for 10 seconds etc to get 50%.
An inverter would apply 50% less power, but it would be constant power not intermittent. Sort of like PWM if you’re familiar with that?
Sorry. Not great at explaining it!
I figured that out when we got our first microwave in 1981. It was very loud and you could tell when it was cycling on and off.
I got rid of my microwave like 5 years ago and I haven’t missed it a bit. I got one because I assumed everyone needs it but then realized I basically never use it except to make popcorn