| 单词 | induction coil |
| 释义 | > as lemmasinduction coil b. A wire wound spirally and serving for the passage of a current of electricity in various kinds of electrical apparatus, as in induction coil, resistance coil, etc. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > induction coil induction coil1837 coil1849 Ruhmkorff coil1850 Ruhmkorff1858 inductor1872 1849 M. Somerville On Connexion Physical Sci. (ed. 8) xxxiv. 375 In obtaining a brilliant spark with the aid of an electro-dynamic coil. 1871 J. Tyndall Fragm. Sci. (ed. 6) II. xvi. 435 The strengthened magnet instantly reacts upon the coil which feeds it. 1881 Spottiswoode in Nature No. 623. 547 The induction-coil..consists mainly of two parts, viz. a primary coil of thick wire and few convolutions. induction coil induction coil n. an apparatus for producing electric currents by induction, consisting of two separated coils of wire generally surrounding a soft-iron core, the primary coil being connected with an external source of electricity, and having an arrangement for causing the electric current to vary in intensity, the effect of which is to produce a current of different character in the other or secondary coil; a coil in which an electric current is induced; an inductance coil; Telephony, a transformer in a telephone comprising two coils with a common core. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > induction coil induction coil1837 coil1849 Ruhmkorff coil1850 Ruhmkorff1858 inductor1872 society > communication > telecommunication > telegraphy or telephony > telephony > telephone equipment > [noun] > telephone > parts of telephone induction coil1837 ferrotype1857 telephone receiver1875 mouthpiece1877 receiver1877 microphone1878 telephone trumpet1879 magneto bell1882 magneto call bella1884 rest1883 hook1885 receptor1898 telephone dial1898 ringer1899 dial1900 Button A (or B)1922 switch hook1922 phone bell1924 hybrid coil1925 cradle1929 dial wheel1938 hybrid transformer1941 scriber1968 fascia1973 the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > transformer > [noun] > induction coil pancake coil1910 reactor1915 induction coil1943 1837 Mag. Pop. Sci. 3 110 A lever has also been applied to move..the induction-coil up and down along two magnetic bars. 1855–7 H. M. Noad Man. Electr. II. 728 In 1851, M. Ruhmkorff of Paris brought the induction-coil to a far greater degree of perfection than it had hitherto attained by paying the greatest possible attention to the insulation of the secondary wire. 1876 W. H. Preece & J. Sivewright Telegraphy 262 Each globe or tube ought to be tested from time to time with an induction-coil, or some other generator of electricity of high potential. 1885 R. S. Culley Handbk. Pract. Telegr. (ed. 8) ix. 328 The current from the battery does not itself pass out to line, but through a local circuit formed by the primary wire of an induction coil. This coil has a core made of soft iron wires,..and is wound with two wires one over the other... Every variation of the battery current in the primary, produces a corresponding current in the secondary, but of a much higher potential; this last goes out to line, and acts on the distant receiver. 1885 R. S. Culley Handbk. Pract. Telegr. (ed. 8) ix. 329 The microphone, induction coil and battery, form the sending portion of the telephone. 1891 J. W. Urquhart Dynamo Constr. 9 (caption) The induction coils combined with the field magnet. 1896 T. C. Allbutt et al. Syst. Med. I. 351 I shall speak of electrostatic methods, of treatment by the battery current, and of treatment by the induction coil current. 1943 A. L. Albert Fund. Teleph. vii. 142 When the receiver is removed..the battery causes direct current to flow through the transmitter and the primary of the transformer, often called in telephony an induction coil. 1966 McGraw-Hill Encycl. Sci. & Technol. (rev. ed.) VII. 72/2 Still another type of induction coil, called a reactor, is really a one-winding transformer designed to produce a definite voltage drop for a given current. < as lemmas |
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