A microwave turns leftovers hot in seconds and handles everything from late-night snacks to quick lunches between meetings.

“A burning smell (and smoke) is a sign something is amiss with your microwave, and you should immediately turn off and unplug it,” Shimek says. The problem could be minor, like caked-on food burning ...

The majority of amplifiers used in the microwave industry are specified to operate with fixed current. In the real world of low voltage supplies, fixed current is difficult to realise. Pseudo constant ...