crystal detector

American  

noun

Radio.

1. a 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.

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crystal detector British  

noun

1. electronics 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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Etymology

Origin of crystal detector

First recorded in 1905–10

Example Sentences

“We’ve made crystal detector sets and vacuum tube sets, and——” “And other sets that we never knew just how to describe,” interrupted the irrepressible Herb, with a laugh.

From Project Gutenberg

"Connected to the aerial and the earth, with a crystal detector in series, it is only a matter of applying an ordinary photo-recording drum, and the machine is made."

From Project Gutenberg

If you understand how the audion works as a detector you will have no difficulty in understanding the crystal detector.

From Project Gutenberg

As a general rule, the radio-listener's first receiving set uses a crystal detector.

From Project Gutenberg

The invention of a new type of self-recovering electric receiver made of galena was the fore-runner of application of crystal detectors for extending the range of wireless signals.

From Project Gutenberg