GB213461A - Improvements in or relating to thermionic amplifying valves - Google Patents

Improvements in or relating to thermionic amplifying valves

Info

Publication number
GB213461A
GB213461A GB1325023A GB1325023A GB213461A GB 213461 A GB213461 A GB 213461A GB 1325023 A GB1325023 A GB 1325023A GB 1325023 A GB1325023 A GB 1325023A GB 213461 A GB213461 A GB 213461A
Authority
GB
United Kingdom
Prior art keywords
filament
support
relating
main
fracture
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
GB1325023A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1325023A priority Critical patent/GB213461A/en
Publication of GB213461A publication Critical patent/GB213461A/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
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Electromagnets (AREA)

Abstract

213,461. Garbarini, A. May 17, 1923. Thermionic amplifiers.-A second filament d is automatically connected in circuit on fracture of the main filament c. The filaments are mounted at one end on a common support e and at the other end on separate supports g, f so that when the filament c breaks the support g springs into contact with the support f which ma.y be bent as shown at f<1>. The supports g, f are spaced to allow expansion of the filament c. In another arrangement the winding of an electromagnetic switch mounted in the base of the valve is connected in series with the main filament, and an armature is released to close the circuit of the second filament when the magnet is de-energized owing to fracture of the main filament.
GB1325023A 1923-05-17 1923-05-17 Improvements in or relating to thermionic amplifying valves Expired GB213461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1325023A GB213461A (en) 1923-05-17 1923-05-17 Improvements in or relating to thermionic amplifying valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1325023A GB213461A (en) 1923-05-17 1923-05-17 Improvements in or relating to thermionic amplifying valves

Publications (1)

Publication Number Publication Date
GB213461A true GB213461A (en) 1924-04-03

Family

ID=10019539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1325023A Expired GB213461A (en) 1923-05-17 1923-05-17 Improvements in or relating to thermionic amplifying valves

Country Status (1)

Country Link
GB (1) GB213461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576014A (en) * 1948-02-07 1951-11-20 Sorensen & Company Inc Filament failure device for electronic tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576014A (en) * 1948-02-07 1951-11-20 Sorensen & Company Inc Filament failure device for electronic tubes

Similar Documents

Publication Publication Date Title
GB213461A (en) Improvements in or relating to thermionic amplifying valves
GB448948A (en) Improvements in or relating to electro-magnets for use in organs
GB434404A (en) Improvements in electric incandescent lamps
GB513502A (en) Improvements in electro-magnetic indicators
GB477661A (en) Improvements in or relating to flushing devices
GB226895A (en) Improvements in holders for thermionic valves for use in wireless systems
GB367676A (en) Improvements in electrical contact pins
GB479095A (en) Improvements relating to mercury or other conducting-liquid switches
GB607914A (en) Improvements in or relating to electro-magnets and relays
GB541983A (en) Improvements in electromagnets
GB347910A (en) Improvements relating to electromagnets
GB190750A (en) Improvements in and connected with the suspension of electric lamps
GB182184A (en) Improvements in electromagnets
GB266399A (en) Improvements in or relating to switching mechanisms for use in telephone or like systems
GB168407A (en) Improvements in and relating to supports for filaments for thermionic valves
GB494100A (en) Improvements in or relating to thermionic valves
GB502572A (en) Improvements in and relating to illuminated signs
GB515630A (en) Improvements in and relating to circuit control arrangements of electro-magnetic switches
GB255105A (en) Improvements in and relating to alternating current electromagnets
GB461212A (en) Improvements in or relating to thermionic valves
GB275729A (en) Improvements in polarised relays
ES30169U (en) Double effect candle for fluorescent tube ignition with cathode (Machine-translation by Google Translate, not legally binding)
GB623924A (en) Electro-magnet
GB519478A (en) A plug and socket electrical coupling
GB210244A (en) Improvements in or relating to electro-magnetic sound receiving and producing devices