An electrical device that converts alternating current (AC) to direct current (DC) is the rectifier. The simple process of rectification produces a type of DC characterized by pulsating voltages and ...

Plastic 4-pin base, top contact, S-shaped envelope. Donor’s card reads: “Half-wave mercury vapor rectifier made by Westinghouse for the US government during World War II. This tube is the Westinghouse ...

A 4-pin plastic base, top contact, S-shaped envelope. Donor’s card reads: “Half wave mercury vapor rectifier made by the General Electric Company for the Radio Corporation of America in January 1929.

The more common approach to manipulate the incoming AC wave so that both halves are used to cause output current to flow in the same direction is the use of full-wave rectifiers. A full-wave rectifier ...