rectifying crystal

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• Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… …   Wikipedia

• crystal detector — noun a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier • Hypernyms: ↑detector • Part Meronyms: ↑crystal * * * noun radio : a detector that depends for its operation on the rectifying action of the surface… …   Useful english dictionary

• crystal detector — Radio. 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 …   Universalium

• crystal detector — /krɪstl dəˈtɛktə/ (say kristl duh tektuh) noun a device used in early radio receiving apparatus for rectifying the alternating currents, consisting essentially of a crystal, as of galena or carborundum, permitting a current to pass freely in one… …  

• crystaldetector — crystal detector n. A rectifying detector used especially in early radio receivers and consisting of a semiconducting crystal in point contact with a fine metal wire. * * * …   Universalium

• Cat's-whisker detector — Galena cat s whisker detector Precision cat s whisker d …   Wikipedia

• semiconductor device — ▪ electronics Introduction       electronic circuit component made from a material that is neither a good conductor nor a good insulator (hence semiconductor). Such devices have found wide applications because of their compactness, reliability,… …   Universalium

• N-type semiconductor — N type semiconductors are a type of extrinsic semiconductor where the dopant atoms are capable of providing extra conduction electrons to the host material (e.g. phosphorus in silicon). This creates an excess of negative (n type) electron charge… …   Wikipedia

• Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …   Wikipedia

• Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

• transistor — /tran zis teuhr/, n. 1. Electronics. a semiconductor device that amplifies, oscillates, or switches the flow of current between two terminals by varying the current or voltage between one of the terminals and a third: although much smaller in… …   Universalium