GB539626A - Improvements in or relating to stroboscopic lamps - Google Patents
Improvements in or relating to stroboscopic lampsInfo
- Publication number
- GB539626A GB539626A GB923740A GB923740A GB539626A GB 539626 A GB539626 A GB 539626A GB 923740 A GB923740 A GB 923740A GB 923740 A GB923740 A GB 923740A GB 539626 A GB539626 A GB 539626A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- nickel
- cylinder
- gauze
- cathode
- 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)
- Discharge Lamp (AREA)
Abstract
539,626. Discharge lamps. FERRANTI, Ltd., CHILCOT, A. L. and MILLER, J. L. May 25, 1940, No. 9237. [Class 39 (i)] A lamp-for use as a stroboscope supplied from a condenser which is charged from a d.c. source-has a coated cathode 3 in the form of a split cylinder enclosed in a glass cylinder 5 closed at one end; the cylinder 3 is of nickel and is lined internally with gauze whose interstices are filled with a mixture of caesium chloride and aluminium which releases caesium when a hotspot is formed. A nickel carbon-coated screening electrode 6 is placed above the cathode either within the glass 5 or if the latter is short the electrode 6 is carried at its top ; a bright nickel ring 7 is formed or attached to the bottom of the electrode 6. Inside the cylinders is a starter electrode 4 for providing an auxiliary starting discharge. The anode 10 is placed far enough to ensure a positive column discharge. The filling is neon at a pressure of 25 mm. The nickel cylinder forming the cathode may be carbonized on the in- and outside. Powdered glaze such as sodium borate may be added to the caesium chloride-aluminium mixture before placing within the gauze to improve its attachment thereto. The anode leads 11 may be taken out of the upper end of the envelope instead of through a glass tube 11 to the lower pinch. The starter electrode may have a spiral portion or a piece of gauze at its free end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB923740A GB539626A (en) | 1940-05-25 | 1940-05-25 | Improvements in or relating to stroboscopic lamps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB923740A GB539626A (en) | 1940-05-25 | 1940-05-25 | Improvements in or relating to stroboscopic lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
GB539626A true GB539626A (en) | 1941-09-18 |
Family
ID=9868034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB923740A Expired GB539626A (en) | 1940-05-25 | 1940-05-25 | Improvements in or relating to stroboscopic lamps |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB539626A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1189648B (en) * | 1962-08-07 | 1965-03-25 | Bosch Elektronik Gmbh | Method for producing a gas discharge lamp, in particular a discharge flash lamp, and device for this |
-
1940
- 1940-05-25 GB GB923740A patent/GB539626A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1189648B (en) * | 1962-08-07 | 1965-03-25 | Bosch Elektronik Gmbh | Method for producing a gas discharge lamp, in particular a discharge flash lamp, and device for this |
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