GB838293A - Operating circuits for electric discharge lamps - Google Patents
Operating circuits for electric discharge lampsInfo
- Publication number
- GB838293A GB838293A GB878156A GB878156A GB838293A GB 838293 A GB838293 A GB 838293A GB 878156 A GB878156 A GB 878156A GB 878156 A GB878156 A GB 878156A GB 838293 A GB838293 A GB 838293A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- discharge lamps
- march
- operating circuits
- iron wire
- 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
- H05B41/18—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 a starting switch
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
838,293. Thermal switches. FELDEN ENGINEERING CO. Ltd. March 21, 1957 [March 21, 1956], No. 8781/56. Class 38 (5). [Also in Group XXXV] A space discharge apparatus including fluorescent lamps has the ballast in the form of a resistor made of iron wire in a housing filled with hydrogen, the housing also containing one or more bimetal strips forming starter switch(es) for the lamps, the bimetal strips being operated by the heat developed by the passage of current through the resistor or the heat acquired by the hydrogen filling. The iron wire is wound around a former made of glass fibres.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878156A GB838293A (en) | 1956-03-21 | 1956-03-21 | Operating circuits for electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB878156A GB838293A (en) | 1956-03-21 | 1956-03-21 | Operating circuits for electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB838293A true GB838293A (en) | 1960-06-22 |
Family
ID=9859150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB878156A Expired GB838293A (en) | 1956-03-21 | 1956-03-21 | Operating circuits for electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB838293A (en) |
-
1956
- 1956-03-21 GB GB878156A patent/GB838293A/en not_active Expired
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