The magnetron is a type of vacuum tube used in microwave ovens and radar systems to generate electromagnetic waves at microwave frequencies. It operates as an oscillator, producing a continuous wave (CW) output signal at a specific frequency, typically in the gigahertz range.
Microwave ovens, for example, use magnetrons to generate microwaves, which are then directed into the cooking chamber to heat the food. The magnetron converts electrical energy into electromagnetic radiation, and its design allows it to generate the output signal at the desired operating frequency.
Mnemonic: "Magnetron Magic!"
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