| 单词 |
triode |
| 释义 |
triode, a. and n.|ˈtraɪəʊd|
[f. tri- + -ode2.]
†A. adj. Telegr. Permitting or involving the transmission of three signals simultaneously. Obs.
1886[see hexode a.].
B. n. Electronics.
a. A thermionic valve having three electrodes (also triode valve); also, an analogous semiconductor device with three terminals.
1919W. H. Eccles in Electrician 18 Apr. 475/2 It seems very natural to call a vacuous space containing three electrodes a ‘tri-electrode’, or, for short, a triode. 1919Nature 30 Oct. 178/2 The internal action of a triode valve. 1923Mod. Wireless June 304/2 The amplifier used consisted of a single Western Electric triode. 1943C. L. Boltz Basic Radio x. 155 The thing which is most striking about the triode is the effect of grid voltage on the anode current. 1948Physical Rev. LXXIV. 230/1 (heading) The transistor, a semi-conductor triode. 1962D. F. Shaw Introd. Electronics xi. 220 One of the most important uses of the triode valve is for the amplification of a voltage. 1962Simpson & Richards Physical Princ. Junction Transistors viii. 191 The second type of avalanching triode..is obtained by connecting a base lead to either the n1 or p2 sections of the diode in Fig. 8.22. 1974A. Van der Ziel Introd. Electronics ix. 216 The vacuum triode is hardly ever used as a small-signal amplifier except at high temperatures, but it is still the only way to develop very large powers.
b. Comb.: triode-hexode, a valve containing a triode and a hexode in a single envelope, with separate anodes but a common cathode; similarly triode-pentode.
1937A. T. Witts Thermionic Valves Mod. Radio Receivers viii. 164 (caption) Circuit for the triode-hexode. 1952E. Armitage Wireless Fundamentals xviii. 325 Sometimes the beat oscillator valve and the mixer valve are both inside a single glass envelope as in the triode⁓hexode.
1936Moyer & Wostrel Radio Receiving & Television Tubes (ed. 3) iv. 156 (caption) Characteristic curves of triode section of triode-pentode tube. |
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