GB936253A - Improvements in or relating to devices for stabilizing the anode current of an electron discharge tube - Google Patents
Improvements in or relating to devices for stabilizing the anode current of an electron discharge tubeInfo
- Publication number
- GB936253A GB936253A GB238861A GB238861A GB936253A GB 936253 A GB936253 A GB 936253A GB 238861 A GB238861 A GB 238861A GB 238861 A GB238861 A GB 238861A GB 936253 A GB936253 A GB 936253A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- transformer
- resistor
- stabilizing
- discharge current
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/24—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices
- G05F1/26—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using bucking or boosting transformers as final control devices combined with discharge tubes or semiconductor devices
-
- 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
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- X-Ray Techniques (AREA)
Abstract
936,253. Automatic current control. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 20, 1961 [Jan. 23, 1960], No. 2388/61. Class 38 (4). A system for stabilizing the discharge current of an X-ray tube 6 supplied from a high voltage source 3 comprises a resistor 9 in the anode circuit of the tube, a D.C. amplifier 24, a filament transformer 11, and a control device 15 in the supply to the transformer 11. Deviations of the discharge current from a value selected on a potentiometer 29 cause variations in the potential across the resistor 9, which variations are applied to the amplifier 24, the output of which controls the device 15 so that the filament current is varied in a sense to maintain the discharge current at the selected value. The device 15 may be a saturable reactor or, as shown, may comprise a transformer having a primary winding 16 in series with the primary winding 12 of the filament transformer, and a secondary winding 17 in two parts short circuited by triode valves 18 to the control electrodes 19 of which is applied the output from the amplifier 24. A resistor 27 in the input to the amplifier 24 and a feedback capacitor 30 across the amplifier are provided to increase the stability of the control system.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL247678 | 1960-01-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB936253A true GB936253A (en) | 1963-09-11 |
Family
ID=19752132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB238861A Expired GB936253A (en) | 1960-01-23 | 1961-01-20 | Improvements in or relating to devices for stabilizing the anode current of an electron discharge tube |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH400383A (en) |
FR (1) | FR1277852A (en) |
GB (1) | GB936253A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3320477A (en) * | 1964-08-19 | 1967-05-16 | Gen Electric | Power supply having over-voltage and over-current protection means |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2127187A5 (en) * | 1971-02-26 | 1972-10-13 | Radiologie Cie Gle |
-
1961
- 1961-01-20 CH CH70861A patent/CH400383A/en unknown
- 1961-01-20 GB GB238861A patent/GB936253A/en not_active Expired
- 1961-01-20 FR FR850321A patent/FR1277852A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3320477A (en) * | 1964-08-19 | 1967-05-16 | Gen Electric | Power supply having over-voltage and over-current protection means |
Also Published As
Publication number | Publication date |
---|---|
FR1277852A (en) | 1961-12-01 |
CH400383A (en) | 1965-10-15 |
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