GB618813A - Improvements in and relating to electric glow switches forming starting devices for fluorescent or other electric discharge lamps - Google Patents
Improvements in and relating to electric glow switches forming starting devices for fluorescent or other electric discharge lampsInfo
- Publication number
- GB618813A GB618813A GB3327846A GB3327846A GB618813A GB 618813 A GB618813 A GB 618813A GB 3327846 A GB3327846 A GB 3327846A GB 3327846 A GB3327846 A GB 3327846A GB 618813 A GB618813 A GB 618813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gms
- envelope
- electric
- fluorescent
- relating
- 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
- H05B41/06—Starting switches thermal only
- H05B41/08—Starting switches thermal only heated by glow discharge
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
618,813. Thermal switches. NEONELECTRIC CO., Ltd., and MORGAN, R. J. B. Nov. 8, 1946, No. 33278. [Class 38 (v)] [Also in Group XL (a)] The envelope of a glow switch for starting fluorescent lamps is coated with a getter to absorb the occluded gases given off by the bi-metal, and the envelope or switch parts are coated with a radio-active substance, such as thorium silicate, to ensure operation of the switch if kept away from the light. The getter comprises 20 gms of amorphous phosphorus and 90 gms. of cryolite (Na3AIF6) mixed in a ball mill with 2000 c.c.s. of methyl alcohol. The envelope is filled with this solution and then emptied, leaving the coating. The' radio-active coating is about one molecule thick and is either applied separately or 20 gms. of thorium silicate is incorporated in the getter mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3327846A GB618813A (en) | 1946-11-08 | 1946-11-08 | Improvements in and relating to electric glow switches forming starting devices for fluorescent or other electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3327846A GB618813A (en) | 1946-11-08 | 1946-11-08 | Improvements in and relating to electric glow switches forming starting devices for fluorescent or other electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB618813A true GB618813A (en) | 1949-02-28 |
Family
ID=10350846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3327846A Expired GB618813A (en) | 1946-11-08 | 1946-11-08 | Improvements in and relating to electric glow switches forming starting devices for fluorescent or other electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB618813A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1025074B (en) * | 1952-04-10 | 1958-02-27 | Westinghouse Electric Corp | Smolder for lighting up fluorescent tube lamps |
| US4646049A (en) * | 1985-11-20 | 1987-02-24 | Gte Products Corporation | Glow discharge starter containing thorium for improving dark starting |
-
1946
- 1946-11-08 GB GB3327846A patent/GB618813A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1025074B (en) * | 1952-04-10 | 1958-02-27 | Westinghouse Electric Corp | Smolder for lighting up fluorescent tube lamps |
| US4646049A (en) * | 1985-11-20 | 1987-02-24 | Gte Products Corporation | Glow discharge starter containing thorium for improving dark starting |
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