GB170546A - Improvements in and relating to electron discharge apparatus - Google Patents
Improvements in and relating to electron discharge apparatusInfo
- Publication number
- GB170546A GB170546A GB9919/21A GB991921A GB170546A GB 170546 A GB170546 A GB 170546A GB 9919/21 A GB9919/21 A GB 9919/21A GB 991921 A GB991921 A GB 991921A GB 170546 A GB170546 A GB 170546A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- transformer
- cathode
- resistance
- electromagnet
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/34—Anode current, heater current or heater voltage of X-ray tube
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- X-Ray Techniques (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
170,546. British Thomson - Houston Co., Ltd., (Assignees of Kearsley, W. K.). Oct. 22, 1920, [Convention date]. R÷ntgen-ray apparatus.-A R÷ntgen-ray tube has means, controlled by the current passing through the tube, for regulating the electron emission from the cathode so as to produce a desired discharge, for instance, a constant emission with a varying supply voltage. For this purpose, the insertion of a resistance 14, Fig. 1, in series with the cathode 5 and the secondary of a transformer 11, is controlled by a make and break switch 19 operated by an electromagnet 17, the winding of which is in series with the secondary of a transformer 2 supplying current through the tube. An increase in the supply voltage causes the electromagnet 17 to open the switch and insert the resistance 14. A condenser 22 is connected across the switch. A variable resistance 12 is connected in series with the primary of the transformer 11. In a modification, Fig. 5, a variable resistance 26 is joined in series with the primary of a transformer 27. A rectifier 29, controlling the connection of two secondaries 35, 36 with the anode and cathode, is driven by a synchronous motor 30, the winding of the electromagnet 17, controlling the inserting the resistance 14 in series with the primary of the cathode-heating transformer 11, being connected between the two secondaries. Specification 166,097 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US735266A US1653102A (en) | 1924-09-02 | 1924-09-02 | Electron-discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB170546A true GB170546A (en) | 1922-06-15 |
Family
ID=24955045
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9919/21A Expired GB170546A (en) | 1924-09-02 | 1921-04-04 | Improvements in and relating to electron discharge apparatus |
| GB19381/22A Expired GB201741A (en) | 1924-09-02 | 1922-07-14 | Improvements in and relating to x-ray apparatus |
| GB21852/25A Expired GB239511A (en) | 1924-09-02 | 1925-09-01 | Improvements in and relating to electron discharge apparatus |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19381/22A Expired GB201741A (en) | 1924-09-02 | 1922-07-14 | Improvements in and relating to x-ray apparatus |
| GB21852/25A Expired GB239511A (en) | 1924-09-02 | 1925-09-01 | Improvements in and relating to electron discharge apparatus |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1653102A (en) |
| DE (1) | DE407939C (en) |
| FR (3) | FR542381A (en) |
| GB (3) | GB170546A (en) |
| NL (1) | NL9214C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE765930C (en) * | 1938-03-27 | 1954-02-08 | Siemens Reiniger Werke Ag | Device for automatically keeping the emission of glow cathode discharge tubes constant, especially X-ray tubes |
| US2824925A (en) * | 1951-06-23 | 1958-02-25 | Westinghouse Electric Corp | Electromagnetic trip circuit interrupters |
-
1921
- 1921-04-04 GB GB9919/21A patent/GB170546A/en not_active Expired
- 1921-06-16 NL NL19656A patent/NL9214C/en active
- 1921-06-17 DE DEI21656D patent/DE407939C/en not_active Expired
- 1921-10-15 FR FR542381D patent/FR542381A/en not_active Expired
-
1922
- 1922-07-14 GB GB19381/22A patent/GB201741A/en not_active Expired
-
1923
- 1923-01-29 FR FR27289D patent/FR27289E/en not_active Expired
-
1924
- 1924-09-02 US US735266A patent/US1653102A/en not_active Expired - Lifetime
-
1925
- 1925-09-01 GB GB21852/25A patent/GB239511A/en not_active Expired
- 1925-09-01 FR FR31070D patent/FR31070E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR27289E (en) | 1924-05-31 |
| FR542381A (en) | 1922-08-10 |
| US1653102A (en) | 1927-12-20 |
| GB239511A (en) | 1926-08-05 |
| FR31070E (en) | 1926-11-22 |
| GB201741A (en) | 1923-08-09 |
| NL9214C (en) | 1923-06-15 |
| DE407939C (en) | 1925-01-06 |
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