GB869136A - Improvements in operating circuits for low-pressure electric discharge lamps - Google Patents
Improvements in operating circuits for low-pressure electric discharge lampsInfo
- Publication number
- GB869136A GB869136A GB3692956A GB3692956A GB869136A GB 869136 A GB869136 A GB 869136A GB 3692956 A GB3692956 A GB 3692956A GB 3692956 A GB3692956 A GB 3692956A GB 869136 A GB869136 A GB 869136A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- low
- electric discharge
- discharge lamps
- pressure electric
- 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
- H05B41/02—Details
- H05B41/04—Starting switches
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
869,136. Discharge lamp circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 25, 1957 [Dec. 3, 1956], No. 36929/56. Class 38 (4). In a circuit for operating in series a plurality of fluorescent lamps 1 having indirectly-heated electrodes, the series or parallel connected heaters 4 are disconnected from an A.C. supply 8, 9 by a switch 10 opened by the passage of heater current through a thermal element 5, the subsequent discharge current through electrodes 3 maintaining the switch open. The circuit is completed by a choke 7 and power factor capacitor 11. A further impedance may be included in series with the heaters.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3692956A GB869136A (en) | 1956-12-03 | 1956-12-03 | Improvements in operating circuits for low-pressure electric discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3692956A GB869136A (en) | 1956-12-03 | 1956-12-03 | Improvements in operating circuits for low-pressure electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB869136A true GB869136A (en) | 1961-05-31 |
Family
ID=10392329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3692956A Expired GB869136A (en) | 1956-12-03 | 1956-12-03 | Improvements in operating circuits for low-pressure electric discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB869136A (en) |
-
1956
- 1956-12-03 GB GB3692956A patent/GB869136A/en not_active Expired
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