GB1169195A - Improvements in or relating to Electric Circuit Arrangements for Operating Electric Discharge Lamps - Google Patents
Improvements in or relating to Electric Circuit Arrangements for Operating Electric Discharge LampsInfo
- Publication number
- GB1169195A GB1169195A GB3304366A GB3304366A GB1169195A GB 1169195 A GB1169195 A GB 1169195A GB 3304366 A GB3304366 A GB 3304366A GB 3304366 A GB3304366 A GB 3304366A GB 1169195 A GB1169195 A GB 1169195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- supply
- capacitor
- electric
- inductor
- 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
- H05B41/048—Starting switches using electromagnetic relays
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
1,169,195. Supply systems for electric discharge lamps. GENERAL ELECTRIC & ENGLISH ELECTRIC CO's. Ltd. 12 July, 1967 [22 July, 1966], No. 33043/66. Heading H2H. A supply system for an electric discharge lamp of the type having a discharge envelope 1 situated inside a glass jacket 5 comprises a parallel circuit of an inductor 13 and a capacitor 14 connected in one of the supply leads between a supply terminal 9 and a lamp terminal 11, the capacitor 14 having a very much larger impedance value than the inductor 13. The discharge envelope 1 is in the form of a fused silica tube in which are placed main discharge electrodes 2, 2<SP>1</SP> and an auxiliary starting electrode 3. The capacitor has a value of between 0À1 and 1À0 micro-farad and the inductor a value between 20 and 450 ohms at the supply frequency. A normally closed bimetal switch 6, 7 is provided for starting the lamp and a normally open switch 8 is provided to minimize electrolysis effects during the running of the lamp. The lamp restriking voltage is more than twice its running voltage which is not less than half the supply voltage. In a second embodiment the lamp may be of the low pressure type without a starting electrode and the starting switch may be of the glow type external to the lamp. Capacitor 16 provides power factor correction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3304366A GB1169195A (en) | 1966-07-22 | 1966-07-22 | Improvements in or relating to Electric Circuit Arrangements for Operating Electric Discharge Lamps |
| DE19671589175 DE1589175A1 (en) | 1966-07-22 | 1967-07-19 | Circuit for operating electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3304366A GB1169195A (en) | 1966-07-22 | 1966-07-22 | Improvements in or relating to Electric Circuit Arrangements for Operating Electric Discharge Lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1169195A true GB1169195A (en) | 1969-10-29 |
Family
ID=10347758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3304366A Expired GB1169195A (en) | 1966-07-22 | 1966-07-22 | Improvements in or relating to Electric Circuit Arrangements for Operating Electric Discharge Lamps |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1589175A1 (en) |
| GB (1) | GB1169195A (en) |
-
1966
- 1966-07-22 GB GB3304366A patent/GB1169195A/en not_active Expired
-
1967
- 1967-07-19 DE DE19671589175 patent/DE1589175A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1589175A1 (en) | 1970-05-14 |
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