GB898577A - Improvements in or relating to electric circuit arrangements for the operation of discharge lamps - Google Patents
Improvements in or relating to electric circuit arrangements for the operation of discharge lampsInfo
- Publication number
- GB898577A GB898577A GB1454759A GB1454759A GB898577A GB 898577 A GB898577 A GB 898577A GB 1454759 A GB1454759 A GB 1454759A GB 1454759 A GB1454759 A GB 1454759A GB 898577 A GB898577 A GB 898577A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistor
- discharge lamps
- relating
- resistance
- electric circuit
- 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
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
898,577. Supply systems for discharge lamps. GENERAL ELECTRIC CO. Ltd. April 27, 1960 [April 28, 1959], No. 14547/59. Class 38 (4). In a discharge lamp circuit operated through a double-wound or auto transformer 3 and having a capacitor 9 directly connected across the whole or part of the winding 3, additional resistance is provided in series with the capacitor to damp resonant oscillations which may occur particularly on switching on. The resistance may be a high-resistance section of the transformer or a separate resistor 11, which separate resistor may have a large negative temperature coefficient. The resistor may be alternatively connected in series with the supply. The value of the resistor may be less than that necessary to produce non-oscillation to reduce the power loss.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1454759A GB898577A (en) | 1959-04-28 | 1959-04-28 | Improvements in or relating to electric circuit arrangements for the operation of discharge lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1454759A GB898577A (en) | 1959-04-28 | 1959-04-28 | Improvements in or relating to electric circuit arrangements for the operation of discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB898577A true GB898577A (en) | 1962-06-14 |
Family
ID=10043201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1454759A Expired GB898577A (en) | 1959-04-28 | 1959-04-28 | Improvements in or relating to electric circuit arrangements for the operation of discharge lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB898577A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496880A (en) * | 1982-06-24 | 1985-01-29 | Lueck Harald | Fluorescent lamp ballast |
US5072156A (en) * | 1990-11-29 | 1991-12-10 | North American Philips Corporation | Ballast circuit with means to disconnect power factor capacitor |
-
1959
- 1959-04-28 GB GB1454759A patent/GB898577A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496880A (en) * | 1982-06-24 | 1985-01-29 | Lueck Harald | Fluorescent lamp ballast |
US5072156A (en) * | 1990-11-29 | 1991-12-10 | North American Philips Corporation | Ballast circuit with means to disconnect power factor capacitor |
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