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A mechanical rectifier is a device for converting alternating current (AC) to direct current (DC) by means of mechanically operated switches. The best-known type is the commutator, which is an integral part of a DC dynamo, but before solid-state devices became available, independent mechanical rectifiers were used for certain applications. Before the invention of semiconductors, rectification at high currents involved serious losses.

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  • Mechanical rectifier (en)
  • Механический выпрямитель (ru)
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  • Механический выпрямитель — устройство для преобразования переменного тока в постоянный ток посредством механически-управляемых переключателей. Наиболее известным видом является коллектор, который является составной частью электродвигателей постоянного тока, но, до того как твердотельные диоды стали доступными, для некоторых применений использовались независимые механические выпрямители. (ru)
  • A mechanical rectifier is a device for converting alternating current (AC) to direct current (DC) by means of mechanically operated switches. The best-known type is the commutator, which is an integral part of a DC dynamo, but before solid-state devices became available, independent mechanical rectifiers were used for certain applications. Before the invention of semiconductors, rectification at high currents involved serious losses. (en)
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  • A mechanical rectifier is a device for converting alternating current (AC) to direct current (DC) by means of mechanically operated switches. The best-known type is the commutator, which is an integral part of a DC dynamo, but before solid-state devices became available, independent mechanical rectifiers were used for certain applications. Before the invention of semiconductors, rectification at high currents involved serious losses. There were various vacuum/gas devices, such as the mercury arc rectifiers, thyratrons, ignitrons, and vacuum diodes. Solid-state technology was in its infancy, represented by copper oxide and selenium rectifiers. All of these gave excessive forward voltage drop at high currents. One answer was mechanically opening and closing contacts, if this could be done quickly and cleanly enough. (en)
  • Механический выпрямитель — устройство для преобразования переменного тока в постоянный ток посредством механически-управляемых переключателей. Наиболее известным видом является коллектор, который является составной частью электродвигателей постоянного тока, но, до того как твердотельные диоды стали доступными, для некоторых применений использовались независимые механические выпрямители. (ru)
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