GB1299601A - Improvements in or relating to alternating current regulator arrangements - Google Patents

Improvements in or relating to alternating current regulator arrangements

Info

Publication number
GB1299601A
GB1299601A GB5219069A GB5219069A GB1299601A GB 1299601 A GB1299601 A GB 1299601A GB 5219069 A GB5219069 A GB 5219069A GB 5219069 A GB5219069 A GB 5219069A GB 1299601 A GB1299601 A GB 1299601A
Authority
GB
United Kingdom
Prior art keywords
current
output
rectifier
output terminals
detector
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
GB5219069A
Inventor
Alan Henry Weinberg
Eric Willoughby Porter
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.)
Plessey Co Ltd
Original Assignee
Plessey 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB5219069A priority Critical patent/GB1299601A/en
Priority to DE19702051828 priority patent/DE2051828A1/en
Priority to FR7038281A priority patent/FR2066425A5/fr
Publication of GB1299601A publication Critical patent/GB1299601A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/04—Controlling
    • H05B39/08—Controlling by shifting phase of trigger voltage applied to gas-filled controlling tubes also in controlled semiconductor 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
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control

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 Arrangement For Electric Light Sources In General (AREA)
  • Rectifiers (AREA)

Abstract

1299601 Automatic current control PLESSEY CO Ltd 28 Sept 1970 [24 Oct 1969] 52190/69 Heading G3R The R.M.S. current supplied to output terminals 2 from an A. C. source 1 via a transformer T1 is maintained constant by varying the firing instant of anti-parallel connected thyristors R1, R2 in accordance with an error signal derived from a comparison of the actual current with a reference signal VR representative of a desired current. The actual current is sensed by a current transformer T2 whose output is rectified by a rectifier 3 feeding a selector 4 which passes a desired proportion of the signal to a R.M.S. detector 5. The output of the latter is substantially proportional to the R.M.S. current taken by the load connected to output terminals 2 and is supplied to a differential amplifier 6 for comparison with the reference signal VR. The output of amplifier 6 is applied to a timing circuit 7 which controls a pulse generator 8 to determine the firing instant of the thyristors R1, R2. The output terminals 2 may supply the lamps on an airfield lighting circuit and the regulator maintains the R.M.S. current constant at a value corresponding to a brilliance selected by the member 4, which comprises a number of shunt paths connected across the output of rectifier 3, each path consisting of a silicon controlled rectifier and a resistor. Selected paths are chosen by triggering the appropriate silicon controlled rectifier using switches in the regulator or in a remote control station. Detector 5 may consist of a number of series-connected Zener diodes inter-connected with a resistive network.
GB5219069A 1969-10-24 1969-10-24 Improvements in or relating to alternating current regulator arrangements Expired GB1299601A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5219069A GB1299601A (en) 1969-10-24 1969-10-24 Improvements in or relating to alternating current regulator arrangements
DE19702051828 DE2051828A1 (en) 1969-10-24 1970-10-22 Rule arrangement
FR7038281A FR2066425A5 (en) 1969-10-24 1970-10-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5219069A GB1299601A (en) 1969-10-24 1969-10-24 Improvements in or relating to alternating current regulator arrangements

Publications (1)

Publication Number Publication Date
GB1299601A true GB1299601A (en) 1972-12-13

Family

ID=10462980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5219069A Expired GB1299601A (en) 1969-10-24 1969-10-24 Improvements in or relating to alternating current regulator arrangements

Country Status (3)

Country Link
DE (1) DE2051828A1 (en)
FR (1) FR2066425A5 (en)
GB (1) GB1299601A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040395A2 (en) * 1980-05-20 1981-11-25 Licentia Patent-Verwaltungs-GmbH Electric power supplying device for electrically heating molten material
WO1999008489A1 (en) * 1997-08-05 1999-02-18 Siemens Aktiengesellschaft Method and device for stabilizing the series circuit current of lighting installations at airports and similar

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057842A (en) * 1976-01-28 1977-11-08 Borg-Warner Corporation Current regulation system for three-phase load
US4271387A (en) * 1978-04-20 1981-06-02 Tokyo Shibaura Denki Kabushiki Kaisha Method and system of controlling effective value of alternating current
GB2125994A (en) * 1982-08-25 1984-03-14 Page Eng Co Ltd A c power control system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040395A2 (en) * 1980-05-20 1981-11-25 Licentia Patent-Verwaltungs-GmbH Electric power supplying device for electrically heating molten material
EP0040395A3 (en) * 1980-05-20 1982-06-02 Licentia Patent-Verwaltungs-Gmbh Electric power supplying device for electrically heating molten material
WO1999008489A1 (en) * 1997-08-05 1999-02-18 Siemens Aktiengesellschaft Method and device for stabilizing the series circuit current of lighting installations at airports and similar

Also Published As

Publication number Publication date
DE2051828A1 (en) 1971-05-06
FR2066425A5 (en) 1971-08-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee