GB681821A - Improvements in electric discharge devices - Google Patents
Improvements in electric discharge devicesInfo
- Publication number
- GB681821A GB681821A GB1998949A GB1998949A GB681821A GB 681821 A GB681821 A GB 681821A GB 1998949 A GB1998949 A GB 1998949A GB 1998949 A GB1998949 A GB 1998949A GB 681821 A GB681821 A GB 681821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- coating
- electrode
- wall
- 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
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/56—One or more circuit elements structurally associated with the lamp
Abstract
681,821. Arc discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., CLARKE, M. G., and PRIVETT, H. L. July 28, 1950 [July 29, 1949], No. 19989/49. Class 39(i) In an electric discharge device which, during operation, produces a discharge having a negative volt-ampere characteristic and which requires a reactance in series therewith, the reactance is in the form of a capacitance constituted by a light permeable metallic conductive coating 14 located on the wall 10 of the envelope, and the effective light output is obtained from, or enhanced by, a coating of luminescent material 13 which is supported on the innermost surface of the envelope. The coating 14 which forms one electrode of the device, may be outside or inside the wall Fig. 2 (not shown) and is spaced from the discharge space by dielectric material, such dielectric being the wall of the envelope when the coating is located on the outside. The second electrode 11 is located inside the envelope and is immersed in ionisable medium such as argon at a pressure of 3 mm. The second electrode may be a filament as shown or a second light-permeable conducting film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1998949A GB681821A (en) | 1949-07-29 | 1949-07-29 | Improvements in electric discharge devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1998949A GB681821A (en) | 1949-07-29 | 1949-07-29 | Improvements in electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB681821A true GB681821A (en) | 1952-10-29 |
Family
ID=10138473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1998949A Expired GB681821A (en) | 1949-07-29 | 1949-07-29 | Improvements in electric discharge devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB681821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3344020A1 (en) * | 1982-12-29 | 1984-07-12 | N.V. Philips' Gloeilampenfabrieken, Eindhoven | GAS DISCHARGE LAMP |
| GB2226444A (en) * | 1988-12-22 | 1990-06-27 | Matsushita Electric Works Ltd | Electrodeless discharge lamp |
-
1949
- 1949-07-29 GB GB1998949A patent/GB681821A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3344020A1 (en) * | 1982-12-29 | 1984-07-12 | N.V. Philips' Gloeilampenfabrieken, Eindhoven | GAS DISCHARGE LAMP |
| GB2133612A (en) * | 1982-12-29 | 1984-07-25 | Philips Nv | Gas and/or vapour discharge lamp |
| DE3344020C2 (en) * | 1982-12-29 | 1993-04-01 | N.V. Philips' Gloeilampenfabrieken, Eindhoven, Nl | |
| GB2226444A (en) * | 1988-12-22 | 1990-06-27 | Matsushita Electric Works Ltd | Electrodeless discharge lamp |
| GB2226444B (en) * | 1988-12-22 | 1993-05-12 | Matsushita Electric Works Ltd | Electrodeless discharge lamp |
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