GB736370A - Improvements in or relating to electric circuit arrangements for starting and operating a pair of low pressure cold starting electric discharge lamps - Google Patents
Improvements in or relating to electric circuit arrangements for starting and operating a pair of low pressure cold starting electric discharge lampsInfo
- Publication number
- GB736370A GB736370A GB1018753A GB1018753A GB736370A GB 736370 A GB736370 A GB 736370A GB 1018753 A GB1018753 A GB 1018753A GB 1018753 A GB1018753 A GB 1018753A GB 736370 A GB736370 A GB 736370A
- Authority
- GB
- United Kingdom
- Prior art keywords
- starting
- lamps
- lamp
- pair
- discharge lamps
- 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
736,370. Supply systems for space-discharge lamps. GENERAL ELECTRIC CO., Ltd., and CATES, J. April 14, 1954 [April 14, 1953], No. 10187/53. Class 38 (4). A pair of cold starting lowpressure electric discharge lamps 1, 2 are connected in series across the secondary winding 8 of a voltage step-up transformer 9 and one only, 2, of the lamps is shunted by the normally closed contacts 10, 11 of a thermal starting switch 12 of the resistance-heated bimetal type the heater resistance 13 of which is connected in series with the lamps and the secondary winding whereby to open the contacts in response to the passage of lamp-discharge current. The voltage of the secondary winding is sufficient to initiate a discharge in lamp 1 and this discharge current actuates the switch to start lamp 2. The transformer may be either auto- or double-wound, and may be of the stray field type to provide all or part of the lamp ballast. The circuit shown includes a ballast capacitor 18 of such value that the overall ballast is capacitive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1018753A GB736370A (en) | 1953-04-14 | 1953-04-14 | Improvements in or relating to electric circuit arrangements for starting and operating a pair of low pressure cold starting electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1018753A GB736370A (en) | 1953-04-14 | 1953-04-14 | Improvements in or relating to electric circuit arrangements for starting and operating a pair of low pressure cold starting electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB736370A true GB736370A (en) | 1955-09-07 |
Family
ID=9963158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1018753A Expired GB736370A (en) | 1953-04-14 | 1953-04-14 | Improvements in or relating to electric circuit arrangements for starting and operating a pair of low pressure cold starting electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB736370A (en) |
-
1953
- 1953-04-14 GB GB1018753A patent/GB736370A/en not_active Expired
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