| 单词 | choke-coil |
| 释义 | > as lemmaschoke-coil 6. (Also choke-coil.) = choking coil n. at choking n. 2; choke control (in wireless telegraphy), modulation of the carrier-wave by means of a choke. ΘΚΠ society > communication > telecommunication > [noun] > signal > modulation choke control1909 modulation1919 frequency modulation1922 pulse modulation1929 phase modulation1930 undermodulation1940 pulse time modulation1944 pulse position modulation1945 PCM1947 pulse amplitude modulation1947 pulse code modulation1947 pulse frequency modulation1950 pulse width modulation1953 pulse duration modulation1956 the world > matter > physics > electromagnetic radiation > electricity > electrically induced magnetism > electromagnetic induction > [noun] > induction coil > causing charge choking coil1893 choker1902 choke-coil1909 the world > matter > physics > electromagnetic radiation > electricity > electric current > alternating current > [noun] > amplitude > coil causing choking coil1893 choker1902 choke-coil1909 1909 Cent. Dict. Suppl. Choke-coil. 1911 A. B. Smith Mod. Amer. Telephony xxv. 685 The choke coils being inserted in order to prevent the alternations from flowing back on the line circuit. 1913 Year-bk. Wireless Telegr. 331 The transformer secondaries..are protected..by air core chokes. 1915 A. E. Seelig tr. J. A. W. Zenneck Wireless Telegr. 323 To block the path of the oscillations into the circuits of the auxiliary apparatus where a part of their energy would be wasted, by means of choke coils. 1915 A. E. Seelig tr. J. A. W. Zenneck Wireless Telegr. 323 (note) Systems or methods of connection in which no choke coils are needed. 1923 J. C. Hawkhead & H. M. Dowsett Handbk. Wireless Telegraphists (ed. 3) 156 A third method known as ‘anode’ or ‘choke’ control. 1923 J. C. Hawkhead & H. M. Dowsett Handbk. Wireless Telegraphists (ed. 3) 184 The Choke Coils (Air Core). 1923 J. C. Hawkhead & H. M. Dowsett Handbk. Wireless Telegraphists (ed. 3) 200 Air Core Choke. 1927 Observer 6 Mar. 25 Two stages of choke-capacity note magnification. 1928 Morning Post 9 July When chokes having a winding of thick wire are used the voltage lost is quite small. 1928 Times 26 Nov. 11/3 R.W.C...was charged..with selling high frequency chokes, to which a false trade description..had been applied. 1941 Electronic Engin. 14 396 Small transformers, chokes and loudspeakers..should be treated in the same manner as suggested for the mains transformer. < as lemmas |
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