GB1207251A - Improvements in or relating to lighting control installations - Google Patents

Improvements in or relating to lighting control installations

Info

Publication number
GB1207251A
GB1207251A GB2115468A GB2115468A GB1207251A GB 1207251 A GB1207251 A GB 1207251A GB 2115468 A GB2115468 A GB 2115468A GB 2115468 A GB2115468 A GB 2115468A GB 1207251 A GB1207251 A GB 1207251A
Authority
GB
United Kingdom
Prior art keywords
circuit
lighting control
autotransformer
boosting
thyristors
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
GB2115468A
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.)
BBC Brown Boveri AG Germany
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri AG Germany
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri AG Germany filed Critical Brown Boveri und Cie AG Germany
Publication of GB1207251A publication Critical patent/GB1207251A/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
    • G05F1/30—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 semiconductor devices only
    • 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
    • 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

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)
  • Ac-Ac Conversion (AREA)

Abstract

1,207,251. Lighting control circuits; boosting by transformers. BROWN, BOVERI & CIE A.G. 3 May, 1968 [12 May, 1967],No. 21154/68. Heading H2H. Device for smoothing and boosting a voltage supplied by way of a phase-controlled unit includes an autotransformer constructed to have a leakage field. The device forms part of a lighting intensity control arrangement. In the circuit described, an autotransformer 6 boosts the voltage from coupled thyristors 2, 3, and also attenuates harmonies introduced into the supply by the thyristors in that a limb 9 and air-gap 10 provide a shunt for the flux of the transformer which acts as a series inductance in the output circuit. An R-C circuit is also connected across the transformer secondary so that appreciable current flows when no output is being drawn. The R-C circuit is tuned with the secondary inductance to the supply frequency.
GB2115468A 1967-05-12 1968-05-03 Improvements in or relating to lighting control installations Expired GB1207251A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0092480 1967-05-12

Publications (1)

Publication Number Publication Date
GB1207251A true GB1207251A (en) 1970-09-30

Family

ID=6986415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2115468A Expired GB1207251A (en) 1967-05-12 1968-05-03 Improvements in or relating to lighting control installations

Country Status (3)

Country Link
BE (1) BE714916A (en)
DE (1) DE1613566A1 (en)
GB (1) GB1207251A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152002A1 (en) * 1984-02-10 1985-08-21 BBC Brown Boveri AG Phase-shifter
GB2196804A (en) * 1986-10-01 1988-05-05 Nat Res Dev Improvements in or relating to electric generating systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0152002A1 (en) * 1984-02-10 1985-08-21 BBC Brown Boveri AG Phase-shifter
US4661763A (en) * 1984-02-10 1987-04-28 Bbc Brown, Boveri & Company, Limited Phase shifter
GB2196804A (en) * 1986-10-01 1988-05-05 Nat Res Dev Improvements in or relating to electric generating systems

Also Published As

Publication number Publication date
BE714916A (en) 1968-09-30
DE1613566A1 (en) 1970-09-17

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed