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单词 crystal detector
释义

WordReference Random House Unabridged Dictionary of American English © 2024
crystal detector, [Radio.]
  1. Radio and Televisiona device for rectifying a modulated radio-frequency signal, consisting of a crystal of germanium, silicon, galena, or the like with a cat whisker contact, permitting a high-frequency current to pass freely in one direction only: one of the two principal components of a crystal set.
  • 1905–10

Collins Concise English Dictionary © HarperCollins Publishers::
crystal detector n
  1. a demodulator, used esp in microwave circuits and in early radio receivers, consisting of a thin metal wire in point contact with a semiconductor crystal
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