What is Magnetron?
Magnetron cavity is a type of vacuum tube that generates microwaves that are short waves. Electron currents are manipulated by magnetic fields, causing microwave emissions. The first magnetron of the cavity was developed by two British physics in 1940 and led to the development of portable radar units. Today, these devices are still used in a radar device and as a generator of electromagnetic waves that each microwave used to cook food.
The cathode is mounted in the center of an anode in the shape of a hollow cylinder. The middle cavity, which is also in the shape of a cylinder, is associated with other smaller cavities in the outer wall of the cylinder and at both ends a large magnet is mounted. Magnetic fields cause the electrons of the spirals around the cathode when traveling to the anode, rather than moving in a straight line. The interaction of electrons flow with magnetic field causes an electric resonance field in the cavities in the outer cylinder Wall, which emits microwaves. Magnetron cavity can be designed to emit micrfor the required frequency.
The development of the Magnetron cavity was one of the most important progress in technology in the 20th century. Its implementation made it possible to mounted portable radar units on boats and aircraft, as well as ground radars more more efficient and efficient. This improved radar technology is widely attributed to the Allies to provide a significant advantage over the eyelet in this area during World War II.
In 2011, the magnetrons of cavities are still widely used for radar systems, although they are beginning to replace newer technologies using alternative transmitters. This is due to the fact that the very nature of oscillating electric fields that emit microwave as other considerations, such as human proximity to strong electromagnetic radiation when these systems are mounted on aircraft and naval vessels. Existing radar systems are generally replaced eitherThey upgrade, and for this reason, the Magnerons of the cavities will continue to be operating in radar equipment for many years or even decades.
microwave furnaces use magnetrons of the cavity, albeit much smaller and less powerful than those used for radar equipment. In the microwave, the microwaves are directed into a cooking box and are distributed by a diffuser that helps the food more evenly to cook. Most microwave furnaces use magnetron cavities, which in large commercial models release a maximum of 2500 watts, while highly powerful cavity magnetrants used for radar applications can produce millions of watts.