DE455364C - Glow cathode tubes - Google Patents

Glow cathode tubes

Info

Publication number
DE455364C
DE455364C DES62923D DES0062923D DE455364C DE 455364 C DE455364 C DE 455364C DE S62923 D DES62923 D DE S62923D DE S0062923 D DES0062923 D DE S0062923D DE 455364 C DE455364 C DE 455364C
Authority
DE
Germany
Prior art keywords
cathode tubes
glow cathode
hot cathode
glow
hafnium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DES62923D
Other languages
German (de)
Inventor
Dr Hans Gerdien
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DES62923D priority Critical patent/DE455364C/en
Application granted granted Critical
Publication of DE455364C publication Critical patent/DE455364C/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/14—Solid thermionic cathodes characterised by the material

Landscapes

  • Discharge Lamp (AREA)

Description

Glühkathodenröhre. Die Erfindung betrifft eine Glühkathodenröhre, bei der die Glühkathode aus einer chemischen Verbindung des Hafniums, z. B. Hafniumoxyd, Hafniumhydrid, besteht. Es hat sich ergeben, daß Hafniumverbindungen leicht Elektronen emittieren und daher der Energieaufwand zur Heizung einer Glühkathode bei einer gegebenen Elektronenemission sehr gering ist. Da zur Erzielung einer bestimmten Elektronenemission verhältnismäßig geringe Temperaturen notwendig sind, so ist die Lebensdauer der Glühkathoden groß.Hot cathode tube. The invention relates to a hot cathode tube, in which the hot cathode consists of a chemical compound of hafnium, e.g. B. hafnium oxide, Hafnium hydride. It has been found that hafnium compounds easily generate electrons emit and therefore the energy required to heat a hot cathode at a given electron emission is very low. Because to achieve a certain Electron emission relatively low temperatures are necessary, so is the Long service life of the hot cathodes.

Claims (1)

PATENTANSPRUCI3: Glühkathodenröhre, dadurch gekennzeichnet, daß die Glühkathode aus einer chemischen Verbindung des Hafniums besteht.PATENT claim 3: Hot cathode tube, characterized in that the Hot cathode consists of a chemical compound of hafnium.
DES62923D 1923-05-18 1923-05-18 Glow cathode tubes Expired DE455364C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DES62923D DE455364C (en) 1923-05-18 1923-05-18 Glow cathode tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES62923D DE455364C (en) 1923-05-18 1923-05-18 Glow cathode tubes

Publications (1)

Publication Number Publication Date
DE455364C true DE455364C (en) 1928-01-30

Family

ID=7495984

Family Applications (1)

Application Number Title Priority Date Filing Date
DES62923D Expired DE455364C (en) 1923-05-18 1923-05-18 Glow cathode tubes

Country Status (1)

Country Link
DE (1) DE455364C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011073B (en) * 1952-11-22 1957-06-27 Westinghouse Electric Corp Electron-emitting coating for electrodes of electrical gas discharge vessels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1011073B (en) * 1952-11-22 1957-06-27 Westinghouse Electric Corp Electron-emitting coating for electrodes of electrical gas discharge vessels

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