GB534004A - Improvements relating to the starting of gaseous electric discharge devices - Google Patents
Improvements relating to the starting of gaseous electric discharge devicesInfo
- Publication number
- GB534004A GB534004A GB32405/39A GB3240539A GB534004A GB 534004 A GB534004 A GB 534004A GB 32405/39 A GB32405/39 A GB 32405/39A GB 3240539 A GB3240539 A GB 3240539A GB 534004 A GB534004 A GB 534004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- turns
- starting
- electric discharge
- reactance
- 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
-
- 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
- H05B41/06—Starting switches thermal only
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/02—High frequency starting operation for fluorescent lamp
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
534,004. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 18, 1939, No. 32405. Convention date, Dec. 20, 1938. [Class 39 (i)] [Also in Group XXXV] In an electric discharge lamp 1 wherein at least one electrode is preheated for starting, this electrode 2 is connected at one end to the source 4 through the winding 9 of a reactance and at the other end to the other electrode 3 through additional turns 15 of the reactance ; with a condenser 8 in series with the reactance the turns 9, 15 are additive but without a condenser these turns are opposed. A thermal switch is included in the circuit; this comprises a bimetallic switch 13 with a heating resistance 12. The added turns 15 provide for greater heating of the electrode 2. An electromagnetic switch may be used instead of the thermal switch. The lamp may have a coating of fluorescent material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US246883A US2170457A (en) | 1938-12-20 | 1938-12-20 | Electric discharge apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB534004A true GB534004A (en) | 1941-02-25 |
Family
ID=22932645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB32405/39A Expired GB534004A (en) | 1938-12-20 | 1939-12-18 | Improvements relating to the starting of gaseous electric discharge devices |
Country Status (4)
Country | Link |
---|---|
US (1) | US2170457A (en) |
DE (1) | DE735658C (en) |
FR (1) | FR862361A (en) |
GB (1) | GB534004A (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2480060A (en) * | 1942-03-18 | 1949-08-23 | Hartford Nat Bank & Trust Co | Device comprising a gaseous discharge tube |
US2456859A (en) * | 1944-03-29 | 1948-12-21 | Gen Electric | Electric discharge apparatus |
US2515109A (en) * | 1946-03-20 | 1950-07-11 | Berger Paul | Transformer |
US2485398A (en) * | 1947-04-10 | 1949-10-18 | Gen Electric | Starting and operating circuit for electric discharge devices |
US2683242A (en) * | 1949-02-16 | 1954-07-06 | Jefferson Electric Co | Control device and lighting system |
DE968691C (en) * | 1951-12-29 | 1958-03-20 | Patra Patent Treuhand | Ignition and operating equipment, especially for electric fluorescent lamps |
US2897403A (en) * | 1953-05-25 | 1959-07-28 | Wilson A Charbonneaux | Fluorescent lamp lighting circuit |
US2786965A (en) * | 1953-12-03 | 1957-03-26 | Knobel Fritz | Starter for low-potential fluorescent tubular lamps |
-
1938
- 1938-12-20 US US246883A patent/US2170457A/en not_active Expired - Lifetime
-
1939
- 1939-12-15 FR FR862361D patent/FR862361A/en not_active Expired
- 1939-12-18 GB GB32405/39A patent/GB534004A/en not_active Expired
- 1939-12-21 DE DEL99742D patent/DE735658C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2170457A (en) | 1939-08-22 |
DE735658C (en) | 1943-05-21 |
FR862361A (en) | 1941-03-05 |
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