TIL that microwave power settings don't actually reduce the power; rather, they cycle the microwave energy on/off (i.e. 50% power means the energy is on half the time, not on all the time at half p...
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?
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