GB407073A - Improvements in and relating to electric control systems employing saturable reactances - Google Patents

Improvements in and relating to electric control systems employing saturable reactances

Info

Publication number
GB407073A
GB407073A GB24969/32A GB2496932A GB407073A GB 407073 A GB407073 A GB 407073A GB 24969/32 A GB24969/32 A GB 24969/32A GB 2496932 A GB2496932 A GB 2496932A GB 407073 A GB407073 A GB 407073A
Authority
GB
United Kingdom
Prior art keywords
circuit
load
valve
sept
grid
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
GB24969/32A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB407073A publication Critical patent/GB407073A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P13/00—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output
    • H02P13/12—Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output by varying magnetic bias
    • 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
    • G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
    • 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
    • G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
    • G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source

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)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

407,073. Control of A.C. and D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Livingston, O. W.; 841, Main Avenue, Schenectady, New York, U.S.A.) Sept. 7, 1932, No. 24969. Convention date, Sept. 11, 1931. [Class 38 (iii).] The varying effect of a saturable inductance 15, controlling a load circuit 11, when the load is varied is corrected by changing the voltage condition of the grid of a valve 16 in the saturating circuit so that, for example, the illumination of lamps 10 in a theatre will correspond with the setting of a control element 17 whatever the lamp load may be. The grid circuit contains a resistance 34 across which a constant potential difference is maintained and a resistance 39 across which is an opposed and pulsating potential derived from the load circuit so that it varies with the voltage on the circuit. A second valve 42 may be employed when the valve 16 is a half wave rectifier to maintain the current in the saturating circuit throughout the A.C. cycle. According to the Specification as open to inspection under Sect. 91 the device was stated to be applicable to the field circuit of a motor or of a Ward Leonard generator. This subjectmatter does not appear in the Specification as accepted.
GB24969/32A 1931-09-11 1932-09-07 Improvements in and relating to electric control systems employing saturable reactances Expired GB407073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US562359A US1904485A (en) 1931-09-11 1931-09-11 Control system

Publications (1)

Publication Number Publication Date
GB407073A true GB407073A (en) 1934-03-07

Family

ID=24245958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24969/32A Expired GB407073A (en) 1931-09-11 1932-09-07 Improvements in and relating to electric control systems employing saturable reactances

Country Status (5)

Country Link
US (1) US1904485A (en)
BE (1) BE390886A (en)
DE (1) DE639192C (en)
FR (2) FR699545A (en)
GB (1) GB407073A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732477A (en) * 1956-01-24 Control system
US2435965A (en) * 1942-10-09 1948-02-17 Honeywell Regulator Co Electrical motor control apparatus
US2432529A (en) * 1943-08-28 1947-12-16 Albert R Locke Arc welder control circuit
US2443006A (en) * 1944-05-24 1948-06-08 Farnsworth Res Corp Voltage regulator
US2516298A (en) * 1945-06-20 1950-07-25 Allis Chalmers Mfg Co Regulating system utilizing voltage responsive thyratrons
US2573094A (en) * 1946-03-09 1951-10-30 Cutler Hammer Inc Electric welding system
US2675515A (en) * 1947-02-06 1954-04-13 North Electric Mfg Company Battery charging apparatus
US2511981A (en) * 1947-09-26 1950-06-20 Rca Corp Electronic thermostat
US2554218A (en) * 1948-03-27 1951-05-22 Gen Electric Temperature control system
US2586498A (en) * 1951-02-28 1952-02-19 Gen Electric Electronic frequency changer and stabilizing control means therefor

Also Published As

Publication number Publication date
DE639192C (en) 1936-11-30
BE390886A (en)
US1904485A (en) 1933-04-18
FR42283E (en) 1933-06-21
FR699545A (en) 1931-02-16

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