FR770387A - Improvements to lamps and light tubes - Google Patents
Improvements to lamps and light tubesInfo
- Publication number
- FR770387A FR770387A FR770387DA FR770387A FR 770387 A FR770387 A FR 770387A FR 770387D A FR770387D A FR 770387DA FR 770387 A FR770387 A FR 770387A
- Authority
- FR
- France
- Prior art keywords
- lamps
- light tubes
- tubes
- light
- 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
- 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
- H05B41/23—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 not having an auxiliary starting electrode
- H05B41/232—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 not having an auxiliary starting electrode for low-pressure lamps
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US770387XA | 1933-03-06 | 1933-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR770387A true FR770387A (en) | 1934-09-13 |
Family
ID=1551968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR770387D Expired FR770387A (en) | 1933-03-06 | 1934-03-06 | Improvements to lamps and light tubes |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR770387A (en) |
-
1934
- 1934-03-06 FR FR770387D patent/FR770387A/en not_active Expired
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