GB636357A - Improvements in or relating to stabilizing circuits for electron discharge devices - Google Patents

Improvements in or relating to stabilizing circuits for electron discharge devices

Info

Publication number
GB636357A
GB636357A GB21835/47A GB2183547A GB636357A GB 636357 A GB636357 A GB 636357A GB 21835/47 A GB21835/47 A GB 21835/47A GB 2183547 A GB2183547 A GB 2183547A GB 636357 A GB636357 A GB 636357A
Authority
GB
United Kingdom
Prior art keywords
current
transformer
tube
resistor
space 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
GB21835/47A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB636357A publication Critical patent/GB636357A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)

Abstract

636,357. Automatic current control systems; rectifying. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 8, 1947, No. 21835. Convention date, Oct. 9, 1941. [Classes 38 (ii) and 38 (iv)] The space current of an X-ray tube fed with rectified H.T. is maintained constant by variation of the cathode heater current in response to changes in space current. A transformer 5 having double secondary windings 9, 10 connected to pairs of rectifiers 13, 14 ; 17, 18 provides a full-wave rectified, unsmoothed, high-tension supply for the X-ray tube 12..The circuit includes a variable series resistor 20, the voltage drop across which is proportional to the space current of the tube. A gaseous discharge device 32 is connected through resistors 33, 34, in parallel with resistor 20. If the space current increases, the voltage peaks, due to the unsmoothed supply, which appear across resistor 20 cause device 32 to conduct periodically and place a negative bias voltage on the grid of valve 36, reducing the current in the control winding of a saturable reactor 30 connected in the anode circuit of valve 36. The D.C. control current is derived from a transformer 40 and rectifier 48. The saturable reactor being in series with the primary of transformer 25 controls the heater current of the tube cathode to restore the space current to its predetermined value. In a modification, Fig. 2 (not shown), the tube H.T. supply is derived from a transformer having a split secondary supplying a bridge rectifier.
GB21835/47A 1941-10-09 1947-08-08 Improvements in or relating to stabilizing circuits for electron discharge devices Expired GB636357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US414307A US2319378A (en) 1941-10-09 1941-10-09 Stabilizer system

Publications (1)

Publication Number Publication Date
GB636357A true GB636357A (en) 1950-04-26

Family

ID=23640895

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21835/47A Expired GB636357A (en) 1941-10-09 1947-08-08 Improvements in or relating to stabilizing circuits for electron discharge devices

Country Status (2)

Country Link
US (1) US2319378A (en)
GB (1) GB636357A (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL61614C (en) * 1942-11-10 1948-09-15 Philips Nv roentgen device, wherein the tube current regulating means is coupled to the tube voltage and / or load duration regulators
US2712074A (en) * 1945-01-19 1955-06-28 Hugh G Neil Electrical control circuit
US2512193A (en) * 1945-09-20 1950-06-20 Westinghouse Electric Corp Milliamperage stabilizer
US2488167A (en) * 1945-10-15 1949-11-15 Gen Electric X Ray Corp Protective equipment
AT165003B (en) * 1945-12-07 1950-01-10 Ludwig Schulmeister Fa Ing Circuit for anode-side voltage regulation of X-ray tubes
US2537914A (en) * 1946-06-01 1951-01-09 Automatic X Ray Corp Control system
US2519173A (en) * 1946-06-12 1950-08-15 Rca Corp Regulating device
US2503075A (en) * 1947-02-15 1950-04-04 Gen Electric X-ray tube energizing circuit
US2494218A (en) * 1947-07-03 1950-01-10 Picker X Ray Corp Waite Mfg Stabilizer with condenser modulator
US2544716A (en) * 1947-10-31 1951-03-13 Univ Minnesota Filament-plate voltage system
US2627035A (en) * 1947-11-22 1953-01-27 Picker X Ray Corp Waite Mfg Milliamperage stabilizer
US2813978A (en) * 1948-01-07 1957-11-19 Irving R Brenholdt Electron emission regulating means
US2492304A (en) * 1948-05-08 1949-12-27 Westinghouse Electric Corp Tandem x-ray tube stabilizer
US2523247A (en) * 1948-12-17 1950-09-19 Westinghouse Electric Corp Tube control apparatus
US2617045A (en) * 1949-01-08 1952-11-04 Philips Lab Inc Tube current stabilizer
US2626360A (en) * 1950-07-12 1953-01-20 Westinghouse Electric Corp Compensator for x-ray systems
US2748316A (en) * 1952-12-02 1956-05-29 Sylvania Electric Prod Magnetron heater circuit
US2748292A (en) * 1953-05-14 1956-05-29 Continental X Ray Corp Simplified X-ray apparatus
US2933649A (en) * 1956-01-23 1960-04-19 Ward Leonard Electric Co Dimmer compensating circuit
US3069548A (en) * 1958-12-17 1962-12-18 Machlett Lab Inc Protective circuits for electron tubes

Also Published As

Publication number Publication date
US2319378A (en) 1943-05-18

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