| 释义 |
amplifier|ˈæmplɪfaɪə(r)|
[f. next + -er1.]
One who amplifies or enlarges.
1. One who enlarges, who adds to the extent, capacity, or dignity of anything. arch.
1546Bale Eng. Votaries ii. (1550) 3 Yt great cytie Rome, wherof they were the fyrst amplyfyers. 1625tr. Camden's Hist. Eliz. iv. (1688) 536 The Queen was always both a Favourer and an Amplifier of Essex his Honour.
2. One who enlarges or expands a statement or narrative; also, an exaggerator.
1580Sidney Arcadia (1622) 121 Dorilaus could need no amplifiers mouth for the highest point of prayse. 1727Pope Art of Sinking 89 There are amplifiers, who can extend half a dozen thin thoughts over a whole folio. 1857Gladstone Oxf. Ess. 28 All the reasonings..of the amplifiers.
3. A lens which enlarges the field of vision.
1866Intell. Observ. No. 54. 419 An achromatic concave amplifier.
4. Electr. An appliance or circuit which amplifies. (See amplify v. 2 b.)
1914Electrician 12 June 402/2 After developing the Audion as detector, amplifier and oscillator, Dr. Lee de Forest has recently described..the small-sized 3½ volt amplifier bulb. 1918in J. A. Fleming Thermionic Valve (1919) 274 Where the de Forest valve acts as an amplifier it is outside any claim on the Fleming patent of 1904. 1933Boys' Mag. XLVII. 108/1 The complete amplifier could be housed in any average existing gramophone, or could be converted, with the addition of a tuned circuit, into a radio receiver. 1941B.B.C. Gloss. Broadc. Terms 3 Amplifier, apparatus used to increase the volume of a programme output by means of energy drawn from an external source, such as the supply mains. |