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The cavity magnetron is a high-power vacuum tube used in early radar systems and subsequently in microwave ovens and in linear particle accelerators. A cavity magnetron generates microwaves using the interaction of a stream of electrons with a magnetic field, while moving past a series of cavity resonators, which are small, open cavities in a ...
a magnetron control circuit (usually with a microcontroller) a short waveguide (to couple microwave power from the magnetron into the cooking chamber) a turntable and/or metal wave guide stirring fan; a control panel; In most ovens, the magnetron is driven by a linear transformer which can only feasibly be switched completely on or off.
The work of physicist W. W. Hansen was instrumental in the development of the klystron and was cited by the Varian brothers in their 1939 paper. His resonator analysis, which dealt with the problem of accelerating electrons toward a target, could be used just as well to decelerate electrons (i.e., transfer their kinetic energy to RF energy in a ...
High-power 140 GHz gyrotron for plasma heating in the Wendelstein 7-X fusion experiment, Germany.. A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons in a strong magnetic field.
The configuration of the M3 magnetron was essentially the same as that used later in the magnetron developed by Boot and Randall at Birmingham University in early 1940, including the improvement of strapped cavities. Unlike the high-power magnetron in Britain, however, the initial device from the NTRI generated only a few hundred watts. [52]
Crossed-field amplifier internal operation. A CFA's electric and magnetic fields are perpendicular to each other ("crossed fields"). This is the same type of field interaction used in a magnetron; as a result, the two devices share many characteristics (such as high peak power and efficiency), and they have similar physical appearances.
As officials work to contain the virus by killing off infected flocks, the egg shortage has deepened and sent shoppers scrambling, even prompting stores and restaurants to impose purchase limits ...
A magnetron sputter gun showing the target-mounting surface, the vacuum feedthrough, the power connector and the water lines. This design uses a disc target as opposed to the ring geometry illustrated above. Ion-beam sputtering (IBS) is a method in which the target is external to the ion source.