| 释义 |
rejector|rɪˈdʒɛktə(r)|
[a. L. rejector, agent-n. f. rejicĕre to reject.]
1. a. = rejecter.
1752Warburton Wks. (1788) IX. 269 The Rejectors of it..would do well to consider the grounds on which they stand. 1857Keble Euch. Ador. 40 The same sort of trial..as the Holy Communion has evermore been to rejectors.
b. Electronics. = rejector circuit below.
1923Wireless World 7 July 441/1 Signals with the frequency of the aerial circuit will pass through the ordinary tuning device, and little will pass through the rejector. 1946Electronic Engin. XVIII. 45/1 Methods of bass compensation in common use involving arrangements of chokes, condensers, tuned acceptors or rejectors..all fail where high fidelity is required. 1977L. J. Giacoletto Electronics Designer's Handbk. (ed. 2) xxiv. 115 (caption) Complex frequency characteristic of..the admittance of a single-tuned circuit to which a rejector is coupled.
2. Special Comb.: rejector circuit, a circuit consisting of a capacitor and an inductor connected in parallel and having values chosen such that the combination offers a very high impedance to signals of a particular frequency.
1923Wireless World 7 July 441/1 The smaller the damping of the rejector circuit, the better it will perform. 1929Daily Express 7 Nov. 14/3 A rejector circuit, which acts as a by-path for unwanted stations. 1952Electronic Engin. XXIV. 314/1 As the selectivity of the 50 kc/s amplifier is not sufficient to reject the 48 kc/s frequency completely, a separate rejector circuit is used. 1969Nelkon & Humphreys Electronics & Radio viii. 170 The parallel LC circuit is known as a ‘rejector’ circuit because the main current is zero at f0. |