GB409574A - Improvements in or relating to circuit arrangements including a number of thermionic valves having equipotential cathodes - Google Patents

Improvements in or relating to circuit arrangements including a number of thermionic valves having equipotential cathodes

Info

Publication number
GB409574A
GB409574A GB25903/33A GB2590333A GB409574A GB 409574 A GB409574 A GB 409574A GB 25903/33 A GB25903/33 A GB 25903/33A GB 2590333 A GB2590333 A GB 2590333A GB 409574 A GB409574 A GB 409574A
Authority
GB
United Kingdom
Prior art keywords
relating
circuit arrangements
arrangements including
thermionic valves
equipotential
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
GB25903/33A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB409574A publication Critical patent/GB409574A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/22—Heaters

Landscapes

  • Details Of Valves (AREA)

Abstract

409,574. Valve circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 19, 1933, No. 25903. Convention date, Jan. 19. [Class 40 (v).] To adapt thermionic valve circuits for connection to different heating voltages, a switch 5 is arranged so that in one position all the heaters 1 .... 4 are connected in series and in another position, the heaters are connected in a number of parallel branches.
GB25903/33A 1933-01-19 1933-09-19 Improvements in or relating to circuit arrangements including a number of thermionic valves having equipotential cathodes Expired GB409574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL409574X 1933-01-19

Publications (1)

Publication Number Publication Date
GB409574A true GB409574A (en) 1934-05-03

Family

ID=19785967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25903/33A Expired GB409574A (en) 1933-01-19 1933-09-19 Improvements in or relating to circuit arrangements including a number of thermionic valves having equipotential cathodes

Country Status (2)

Country Link
FR (1) FR767148A (en)
GB (1) GB409574A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228370A (en) * 1950-01-28 1966-01-11 Thomas A Daly Electrical control systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE907807C (en) * 1938-06-01 1954-03-29 Blaupunkt Elektronik G M B H Cathode for magnetic field tubes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3228370A (en) * 1950-01-28 1966-01-11 Thomas A Daly Electrical control systems

Also Published As

Publication number Publication date
FR767148A (en) 1934-07-10

Similar Documents

Publication Publication Date Title
GB409574A (en) Improvements in or relating to circuit arrangements including a number of thermionic valves having equipotential cathodes
GB498577A (en) Improved circuit arrangement comprising a discharge tube
GB551732A (en) Improvements in and relating to the manufacture of magnetic circuits
GB377635A (en) Improved circuit embodying a screened-grip valve
GB431180A (en) Improvements in thermionic amplifiers
GB474675A (en) Improvements in or relating to thermionic amplifiers
GB415009A (en) Improvements in high frequency amplifying arrangements
GB427384A (en) Improvements in or relating to amplfiers
GB499468A (en) Improvements in thermionic amplifiers
GB337155A (en) Improvements in or relating to thermionic valve amplifiers
GB421461A (en) Improvements in or relating to circuit arrangements for rectifiers
GB411416A (en) Improvements in or relating to retroactive radio-receiving systems
GB434914A (en) Improvements in supply units for wireless receiving sets, amplifiers and the like
GB491063A (en) Improvements in or relating to circuits comprising electric discharge tubes
AU101916B2 (en) Improvements in or relating to thermionic valves and to circuit arrangements incorporating thesame
AU105680B2 (en) u Improvements in or relating in thermionic valve amplifier circuit arrangements of variable amplification
AU1517833A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1555533A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1555633A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1432833A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1375433A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1286633A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1178833A (en) Improvements in or relating to thermionic valve circuit arrangements
AU1134433A (en) Improvements in or relating to thermionic valve circuit arrangements
GB415962A (en) Improvements in radio receiving sets