A device consisting of a number of metal filings, wires, plates, etc., in loose contact which suffer a drop in resistance in the presence of…
| 单词 | θ197835 |
| 释义 | society > communication > telecommunication > radio communications > radio equipment > [noun] > radio set > receiver > parts of (8) coherer1894 A device consisting of a number of metal filings, wires, plates, etc., in loose contact which suffer a drop in resistance in the presence of… radioconductor1897 = coherer, n. barretter1903 An early device for detecting radio waves by means of the change in resistance in a metal filament. cat's whisker1915 a fine adjustable copper or gold wire in a crystal wireless receiver or in certain types of electronic circuit (see also sense 13l). dial1922 A rotatable disc or knob on a radio used to tune in to various radio stations or networks. Also: a similar knob on a television used to tune in to… radio dial1922 a rotatable disc or knob on a radio used to tune into various radio stations or networks; = dial, n.1 6c. chassis1931 The frame on which the parts of a radio receiver are mounted; also, the assemblage of parts on the frame, excluding the cabinet or housing. front end1938 Electronics. The part of a radio or television receiver to which the aerial signal goes first; esp. the tuner, local oscillator, and mixer of a… |
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