Merrychef 30Z1480

HI-LIMIT MAGNETRON

A high limit ( "Hi Limit" or simply "Limit") switch is one of the most important safety features in numerous pieces of restaurant equipment. In the event that your equipment begins to operate at temperatures above maximum specifications, the high limit will shut down the unit. The high limit switch regulates equipment operation by closely monitoring the equipment's operating temperature.

A magnetron is a high-powered vacuum tube that generates microwaves using the interaction of a stream of electrons with a magnetic field while moving past a series of open metal cavities (cavity resonators). Electrons pass by the openings to these cavities and cause microwaves to oscillate within. The frequency of the microwaves produced (the resonant frequency) is determined by the cavities' physical dimensions.

The magnetron serves as an oscillator, generating a microwave signal from direct current electricity supplied to the vacuum tube. The microwave radiation that the cavities produce is collected up and channeled by a kind of funnel called a waveguide into the cooking compartment of a microwave or rapid cook oven.