Definitions for crystal detector
crys·tal detec·tor

Princeton's WordNetRate this definition:0.0 / 0 votes

1. crystal detectornoun

   a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier

WikipediaRate this definition:0.0 / 0 votes

1. Crystal detector

   A crystal detector is an obsolete electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral which rectifies the alternating current radio signal. It was employed as a detector (demodulator) to extract the audio modulation signal from the modulated carrier, to produce the sound in the earphones. It was the first type of semiconductor diode, and one of the first semiconductor electronic devices. The most common type was the so-called cat's whisker detector, which consisted of a piece of crystalline mineral, usually galena (lead sulfide), with a fine wire touching its surface.The "asymmetric conduction" of electric current across electrical contacts between a crystal and a metal was discovered in 1874 by Karl Ferdinand Braun. Crystals were first used as radio wave detectors in 1894 by Jagadish Chandra Bose in his microwave experiments. Bose first patented a crystal detector in 1901. The crystal detector was developed into a practical radio component mainly by G. W. Pickard, who began research on detector materials in 1902 and found hundreds of substances that could be used in forming rectifying junctions. The physical principles by which they worked were not understood at the time they were used, but subsequent research into these primitive point contact semiconductor junctions in the 1930s and 1940s led to the development of modern semiconductor electronics.The unamplified radio receivers that used crystal detectors are called crystal radios. The crystal radio was the first type of radio receiver that was used by the general public, and became the most widely used type of radio until the 1920s. It became obsolete with the development of vacuum tube receivers around 1920, but continued to be used until World War II and remains a common educational project today thanks to its simple design.

ChatGPTRate this definition:0.0 / 0 votes

1. crystal detector

   A crystal detector is a device used to detect or rectify radio signals in the early days of radio technology. It contains a mineral crystal, such as galena or silicon, which generates an electrical potential when exposed to radio frequency electromagnetic radiation. This allows it to convert alternating current radio signals into direct current that can be used by a headset or other receiving device. Crystal detectors were commonly used in early crystal radio sets.

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1. • Detector

How to pronounce crystal detector?

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How to say crystal detector in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of crystal detector in Chaldean Numerology is: 6

2. Pythagorean Numerology

   The numerical value of crystal detector in Pythagorean Numerology is: 8

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=crystal detector
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Crystal_Detector
3. ^ ChatGPT
   https://chat.openai.com