Comment by chongli
8 hours ago
It's funny, because the inverter microwave is actually cheaper to build nowadays. It uses a small switching power supply to generate the needed voltage to run the magnetron at different power levels. The older style duty cycle microwaves use a huge transformer to generate the high voltage, which makes them way heavier and more expensive due to all that copper.
My microwave is over 20 years old and still working fine even with its computerized automatic modes. Modern versions of the product line are inverter based. Whenever this unit fails I'll probably replace it with the modern inverter version. I've used it at friends places, it's quite nice.
It's a GE Profile model FWIW. It seems like a good product line from my experiences. The matching oven has also been a good performer overall.