GB447428A - Improvements relating to electric lamps - Google Patents
Improvements relating to electric lampsInfo
- Publication number
- GB447428A GB447428A GB35343/34A GB3534334A GB447428A GB 447428 A GB447428 A GB 447428A GB 35343/34 A GB35343/34 A GB 35343/34A GB 3534334 A GB3534334 A GB 3534334A GB 447428 A GB447428 A GB 447428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- resistance
- filament
- mercury
- voltage
- 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
- H05B41/46—Circuits providing for substitution in case of failure of the lamp
-
- 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
- Vessels And Coating Films For Discharge Lamps (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Discharge Lamp (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE412488D BE412488A (da) | 1934-12-08 | ||
NL42973D NL42973C (da) | 1934-12-08 | ||
GB35343/34A GB447428A (en) | 1934-12-08 | 1934-12-08 | Improvements relating to electric lamps |
US51758A US2112993A (en) | 1934-12-08 | 1935-11-27 | Electric lamp |
DES120616D DE679111C (de) | 1934-12-08 | 1935-11-29 | Elektrische Leuchte, bestehend aus einer Hochdrucklampe mit in Reihe geschaltetem Metallgluehfaden |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB35343/34A GB447428A (en) | 1934-12-08 | 1934-12-08 | Improvements relating to electric lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB447428A true GB447428A (en) | 1936-05-19 |
Family
ID=10376670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35343/34A Expired GB447428A (en) | 1934-12-08 | 1934-12-08 | Improvements relating to electric lamps |
Country Status (5)
Country | Link |
---|---|
US (1) | US2112993A (da) |
BE (1) | BE412488A (da) |
DE (1) | DE679111C (da) |
GB (1) | GB447428A (da) |
NL (1) | NL42973C (da) |
-
0
- BE BE412488D patent/BE412488A/xx unknown
- NL NL42973D patent/NL42973C/xx active
-
1934
- 1934-12-08 GB GB35343/34A patent/GB447428A/en not_active Expired
-
1935
- 1935-11-27 US US51758A patent/US2112993A/en not_active Expired - Lifetime
- 1935-11-29 DE DES120616D patent/DE679111C/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2112993A (en) | 1938-04-05 |
BE412488A (da) | |
DE679111C (de) | 1939-07-29 |
NL42973C (da) |
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