FR957886A - - Google Patents
Info
- Publication number
- FR957886A FR957886A FR957886DA FR957886A FR 957886 A FR957886 A FR 957886A FR 957886D A FR957886D A FR 957886DA FR 957886 A FR957886 A FR 957886A
- Authority
- FR
- France
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch
- H05B41/22—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps having an auxiliary starting electrode
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB31564/45A GB613847A (en) | 1945-11-23 | 1945-11-23 | Improvements in or relating to electric discharge lamps and circuits therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR957886A true FR957886A (OSRAM) | 1950-02-28 |
Family
ID=10325000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR957886D Expired FR957886A (OSRAM) | 1945-11-23 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2526559A (OSRAM) |
| BE (1) | BE479820A (OSRAM) |
| CH (1) | CH273532A (OSRAM) |
| FR (1) | FR957886A (OSRAM) |
| GB (1) | GB613847A (OSRAM) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2829297A (en) * | 1954-04-15 | 1958-04-01 | Machlett Lab Inc | Filament structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1565565A (en) * | 1922-02-02 | 1925-12-15 | Westinghouse Lamp Co | Electric gas lamp |
| US1971890A (en) * | 1928-06-14 | 1934-08-28 | Gen Electric | Electric discharge tube |
| US1897642A (en) * | 1931-04-16 | 1933-02-14 | Gen Electric | Gaseous electric discharge device |
| GB412879A (en) * | 1933-03-10 | 1934-07-05 | Gen Electric Co Ltd | Improvements in electric discharge tubes |
| US2175345A (en) * | 1935-07-12 | 1939-10-10 | Gen Electric | Electric gaseous discharge device |
| GB504120A (en) * | 1937-10-18 | 1939-04-18 | Gen Electric Co Ltd | Improvements in electrodes for high-pressure mercury-vapour discharge devices |
-
0
- BE BE479820D patent/BE479820A/xx unknown
- FR FR957886D patent/FR957886A/fr not_active Expired
-
1945
- 1945-11-23 GB GB31564/45A patent/GB613847A/en not_active Expired
-
1948
- 1948-01-14 CH CH273532D patent/CH273532A/fr unknown
- 1948-01-20 US US3316A patent/US2526559A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CH273532A (fr) | 1951-02-15 |
| US2526559A (en) | 1950-10-17 |
| GB613847A (en) | 1948-12-03 |
| BE479820A (OSRAM) |