Microwave sources include artificial devices such as circuits, transmission towers, radar, masers, and microwave ovens, as well as natural sources such as the Sun and the Cosmic Microwave Background. Microwaves can also be produced by atoms and molecules.

Microwaves are widely used in modern technology, for example in point-to-point communication links, wireless networks, microwave radio relay networks, radar, satellite and spacecraft communication, medical diathermy and cancer treatment, remote sensing, radio astronomy, particle accelerators, spectroscopy, industrial …

Cell Phones Cell phone signals are carried through the air as microwaves. You can see how this works in the Figure below. A cell phone encodes the sounds of the caller’s voice in microwaves by changing the frequency of the waves. This is called frequency modulation.

Microwaves heat an object on which they are incident. This property is used in electrical appliances such as a microwave oven. 2. Microwave ovens are used for cooking.

Drawbacks or disadvantages of Coaxial Cable It is expensive to install for longer distances because of its thickness and stiffness. It needs to be grounded to limit interference. The safety is an important concern as it is easy to tap the coaxial cable by breaking it and inserting T-joint in between.

: a vacuum tube in which the flow of electrons is controlled by an applied magnetic field to generate power at microwave frequencies.

Magnetrons are capable of generating extremely high frequencies and also short bursts of very high power. They are an important source of power in radar systems and in microwave ovens.

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A type of vacuum tube used as the frequency source in microwave ovens, radar systems and other high-power microwave circuits. In radar, magnetrons can be used as the signal source to feed the power stage of the radar transmitter, typically a klystron tube.

Well, there are many reasons behind it to cause a magnetron to fail in a microwave oven. They are Magnets Cracking, Burned out terminals, Burned antenna/dome, a loose connection of magnetron, Resistance continuity. … etc. Some of the causes are visually seen and some are known only by testing.