While vacuum electronic devices have largely been superseded over much of consumer electronics, there’s one place where they can still be found for now. The cavity magnetron is a power RF ...

The magnetron theory is simple enough ... After inserting the electrode assembly into a section of a test tube and welding on the ends, the vacuum could be pulled and sealed off.

Invented during the height of the Battle of the Atlantic, the cavity magnetron resembles the vacuum tubes used in old televisions, but with a twist. Magnetrons cause electric charges to oscillate ...

magnetron sputtering, cathodic arc, and evaporation; crystal substrate; high quality tungsten/molybdenum/tantalum heating element, crucible, wire, tube, and plate; as well as high quality Ti alloy and ...