Metal rectifier facts for kids
A metal rectifier is an early type of semiconductor rectifier in which the semiconductor is copper oxide or selenium. They were used to convert alternating current to direct current. They were often used in devices such as radios and battery chargers. Westinghouse Electric was a major manufacturer of these rectifiers since the late 1920s.
In some countries the term "metal rectifier" is applied to all such devices. In other countries the term "metal rectifier" normally refers to copper-oxide types, and "selenium rectifier" to selenium-iron types.
Images for kids
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Selenium Rectifier. 8-plate 160V 450mA Federal-brand
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Copper-oxide rectifier
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High-voltage selenium rectifier
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Metal rectifier Facts for Kids. Kiddle Encyclopedia.