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 tube

Info

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
Application number
GB238861A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB936253A publication Critical patent/GB936253A/en
Expired legal-status Critical Current

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)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (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.
GB238861A 1960-01-23 1961-01-20 Improvements in or relating to devices for stabilizing the anode current of an electron discharge tube Expired GB936253A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2127187A5 (en) * 1971-02-26 1972-10-13 Radiologie Cie Gle

Cited By (1)

* Cited by examiner, † Cited by third party
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
CH400383A (en) 1965-10-15
FR1277852A (en) 1961-12-01

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