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单词 alternator
释义

alternatorn.

Brit. /ˈɔːltəneɪtə/, /ˈɒltəneɪtə/, U.S. /ˈɔltərˌneɪdər/, /ˈɑltərˌneɪdər/
Origin: Formed within English, by derivation. Etymons: alternate v., -or suffix.
Etymology: < alternate v. + -or suffix.
1. Mechanics. A machine part that causes two different but complementary actions to occur alternately, or that undergoes two different actions alternately. Obsolete. rare.
ΘΚΠ
society > occupation and work > equipment > machine > parts of machines > other parts > [noun] > other specific parts
armOE
button?1561
running gear1663
relax1676
collar1678
drumhead1698
long arm1717
drum1744
press cloth1745
head1785
absorber1789
bearing plate1794
crown1796
rhodings1805
press box1825
alternator1829
cushion1832
saw tooth1835
shoe1837
keyboard1839
returner1839
cross-head1844
channel shoe1845
baster1846
water port1864
shifter1869
magazine1873
entry port1874
upsetter1875
mechanism1876
tapper1876
tension bar1879
buttonholer1882
take-up1884
auger1886
instrument panel1897
balancer1904
torsion bar1937
powerhead1960
1829 Reg. Arts & Sci. 3 329 The engine consists of a duplication of parts, viz.—a a, two refrigerators, containing cold water. b b, calorators, containing hot oil. c c, alternators lined with wood, and filled alternately with the hot and cold medium. [Etc.]
1849 U.S. Patent 6035 1/2 [In this loom] the alternator is so called because it causes the picker valve to open the straight furrow, and shut the crooked one, at one stroke, and to open the crooked furrow and shut the straight one the next stroke.
2. A person who alternates, or who causes something to alternate.
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1836 E. W. Lane Acct. Manners & Customs Mod. Egyptians II. xiii. 256 O Alternator of the day and night!
1881 Homeopathic Physician 1 84 Has the alternator of drugs tried the single remedy by these simple rules?
1989 J. U. Ogbu in L. Weis et al. Dropouts from School ix. 199 Alternators are the youth who more or less adopt the ‘immigrants' model’ of schooling, namely, the model of accommodation without assimilation.
2001 Math. Mag. 74 375 The standard other characters in the genre are alternators, who tell the truth and lie alternately on successive questions.
3. An electric generator that gives an alternating current; (esp. in later use) a small one driven by the engine of a motor vehicle.
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the world > matter > physics > electromagnetic radiation > electricity > electrical engineering > dynamo > [noun] > dynamo giving alternating current
alternator1878
high-frequency alternator1891
1878 Lancet 5 Jan. 30/2 I have devised a little instrument which..combines with that of alternator the functions of interruptor and commutator.
1894 Daily News 2 Oct. 6/6 There is one 200 kwt. steam alternator for supplying 5,700 eight candle-power lamps.
1920 Glasgow Herald 9 July 10 What with the high-frequency alternator, and..the thermionic valve, wireless practice has been very much revolutionised.
1937 Geogr. Jrnl. 90 211 Power..was supplied by a 2 B.H.P. Petter petrol engine, driving a 230-volt, 50-cycles alternator.
1979 T. Keneally Passenger x. 92 On the second of these afternoons the alternator on Sal's car went.
2004 Central Coast Express (Austral.) (Nexis) 20 Aug. A pre-engaged starter motor, uprated brakes and alternator were also added to make a much improved driver-friendly car.
This entry has been updated (OED Third Edition, November 2010; most recently modified version published online December 2021).
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n.1829
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