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 cathodesInfo
- 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
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.
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)
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)
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 |
-
1933
- 1933-09-19 GB GB25903/33A patent/GB409574A/en not_active Expired
-
1934
- 1934-01-15 FR FR767148D patent/FR767148A/en not_active Expired
Cited By (1)
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 |
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