thermionic diode

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• Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …   Wikipedia

• Thermionic emission — Closeup of the filament on a low pressure mercury gas discharge lamp showing white thermionic emission mix coating on the central portion of the coil. Typically made of a mixture of barium, strontium and calcium oxides, the coating is sputtered… …   Wikipedia

• diode — ► NOUN Electronics 1) a semiconductor device with two terminals, typically allowing the flow of current in one direction only. 2) a thermionic valve with two electrodes. ORIGIN from DI (Cf. ↑di ) + a shortened form of ELECTRODE(Cf. ↑electrode) …   English terms dictionary

• thermionic power converter — ▪ electronics Introduction also called  thermionic generator,  thermionic power generator,  or  thermoelectric engine        any of a class of devices that convert heat directly into electricity using thermionic emission rather than first… …   Universalium

• thermionic valve — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑thermionic tube, ↑electron tube • Hypernyms: ↑electronic device …   Useful english dictionary

• thermionic tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic vacuum tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device …   Useful english dictionary

• thermionic vacuum tube — noun electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope • Syn: ↑tube, ↑vacuum tube, ↑thermionic tube, ↑electron tube, ↑thermionic valve • Hypernyms: ↑electronic device …   Useful english dictionary

• diode — [ dʌɪəʊd] noun Electronics 1》 a semiconductor device with two terminals, typically allowing the flow of current in one direction only. 2》 a thermionic valve with two electrodes. Origin early 20th cent.: from di 1 + a shortened form of electrode …   English new terms dictionary

• diode — n. Electronics 1 a semiconductor allowing the flow of current in one direction only and having two terminals. 2 a thermionic valve having two electrodes. Etymology: DI (1) + ELECTRODE …   Useful english dictionary

• Tunnel diode — A tunnel diode or Esaki diode is a type of semiconductor diode which is capable of very fast operation, well into the microwave frequency region, by using quantum mechanical effects. It was invented in 1958 by Leo Esaki, who in 1973 received the… …   Wikipedia

• Thermal diode — The term thermal diode is sometimes used to describe a (possibly non electrical) device which causes heat to flow preferentially in one direction. Or, the term may be used to describe an electrical (semiconductor) diode in reference to a thermal… …   Wikipedia