GB483629A - Improvements in negative glow electric discharge lamps - Google Patents
Improvements in negative glow electric discharge lampsInfo
- Publication number
- GB483629A GB483629A GB23525/37A GB2352537A GB483629A GB 483629 A GB483629 A GB 483629A GB 23525/37 A GB23525/37 A GB 23525/37A GB 2352537 A GB2352537 A GB 2352537A GB 483629 A GB483629 A GB 483629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- discharge lamps
- electrodes
- class
- coated
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
483,629. Discharge lamps. GENERAL ELECTRIC CO., Ltd. Aug. 27, 1937, No. 23525. Convention date, June 16. [Class 39 (i)] A negative glow lamp adapted to be operated on alternating mains has two electrodes 8, 9, slightly spaced from each other, which form approximate halves of a conical or cup-shaped body, relatively narrow at the end adjoining the cap 6 and coated on its exterior surface 8<1>, 9<1> with insulating material, the envelope being coated or covered with light-absorbing material 13, except for a region 10 permitting light to escape from the interior of the hollow body. In the form shown, the body is a cone having an slightly greater than 90‹. An insulated gauze 11 prevents the formation of deposits on the window 10. The lead 5 and support 5<1> are protected from undesired discharges by glass tubes. The insulating coating may be mica, enamel or zirconia. In a modification, the electrodes are separated by an axial plane instead of a plane perpendicular to the axis, as shown. The portion 10 of the envelope may be flat or re-entrant. The opaque cover 13 need not be completely opaque and may be mechanically separate from the envelope. Specification 315,369, [Class 39 (i)], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE483629X | 1937-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB483629A true GB483629A (en) | 1938-04-22 |
Family
ID=6543000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23525/37A Expired GB483629A (en) | 1937-06-16 | 1937-08-27 | Improvements in negative glow electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB483629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742265C (en) * | 1939-01-20 | 1943-11-26 | Graentzel Alfred | Glow path controller with high load capacity to keep voltages constant |
-
1937
- 1937-08-27 GB GB23525/37A patent/GB483629A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE742265C (en) * | 1939-01-20 | 1943-11-26 | Graentzel Alfred | Glow path controller with high load capacity to keep voltages constant |
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