GB473347A - Improvements relating to electric discharge lamps - Google Patents
Improvements relating to electric discharge lampsInfo
- Publication number
- GB473347A GB473347A GB1053736A GB1053736A GB473347A GB 473347 A GB473347 A GB 473347A GB 1053736 A GB1053736 A GB 1053736A GB 1053736 A GB1053736 A GB 1053736A GB 473347 A GB473347 A GB 473347A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filament
- lamp
- discharge lamp
- loading
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
473,347. Supply systems for discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDINGTON, J. N. April 9, 1936, No. 10537. Drawings to Specification. [Class 38 (iv)] [Also in Group XL] A discharge lamp, adapted to operate at a mercury-vapour pressure of at least two atmospheres is connected in series with an incandescent metal filament, and the loading of the lamp is not less than 20 watts per c.c. The filament is overloaded during the short time in which the lamp is ignited, but during normal operation runs slightly below its rated current. The loading of the discharge lamp is preferably about equal to, but not greater than, that of the filament. The lamp may be housed in a gas-filled glass bulb in which the filament is arranged. Specific ratings of the discharge lamp and of the filament are included in the Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1053736A GB473347A (en) | 1936-04-09 | 1936-04-09 | Improvements relating to electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1053736A GB473347A (en) | 1936-04-09 | 1936-04-09 | Improvements relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB473347A true GB473347A (en) | 1937-10-11 |
Family
ID=9969648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1053736A Expired GB473347A (en) | 1936-04-09 | 1936-04-09 | Improvements relating to electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB473347A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120470A (en) * | 1982-04-27 | 1983-11-30 | Emi Plc Thorn | Improvements in or relating to discharge lamp circuits |
-
1936
- 1936-04-09 GB GB1053736A patent/GB473347A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2120470A (en) * | 1982-04-27 | 1983-11-30 | Emi Plc Thorn | Improvements in or relating to discharge lamp circuits |
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