Microwave is consumer item used to heat , grill or defrost food item. Construction:
The oven's various electronic motors, relays, and control circuits are located on the exterior casing, to which the oven cavity is bolted. A front panel allows the user to program the microwave, and the door frame has a small window to enable the cook to view the food while it is cooking. Near the top of the steel oven cavity is a magnetronan electronic tube that produces high-frequency microwave oscillations which generates the microwaves. The microwaves are funneled through a metal waveguide and into a stirrer fan, also positioned near the top of the cavity. The fan distributes the microwaves evenly within the oven
