BR9508791A - Electricity control method and system - Google Patents

Electricity control method and system

Info

Publication number
BR9508791A
BR9508791A BR9508791A BR9508791A BR9508791A BR 9508791 A BR9508791 A BR 9508791A BR 9508791 A BR9508791 A BR 9508791A BR 9508791 A BR9508791 A BR 9508791A BR 9508791 A BR9508791 A BR 9508791A
Authority
BR
Brazil
Prior art keywords
winding
circuit
relay contact
selected voltage
neutral
Prior art date
Application number
BR9508791A
Other languages
Portuguese (pt)
Inventor
John Arthur Lawrence
Original Assignee
John Arthur Lawrence
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
Priority claimed from GB9414665A external-priority patent/GB9414665D0/en
Application filed by John Arthur Lawrence filed Critical John Arthur Lawrence
Publication of BR9508791A publication Critical patent/BR9508791A/en

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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/36—Controlling
    • H05B41/38—Controlling the intensity of light
    • H05B41/40—Controlling the intensity of light discontinuously
    • 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
    • G05F1/14—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using tap transformers or tap changing inductors as final control 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)
  • Control Of Eletrric Generators (AREA)
  • Relay Circuits (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Radio Relay Systems (AREA)
  • Keying Circuit Devices (AREA)
  • Control Of Electrical Variables (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The present invention relates to an electrical power control circuit for loads such as fluorescent lighting systems. A winding (3) has a positive end (13) connected to a positive rail (1) and is tapped at a predetermined position (18) for supplying an output terminal (T) with a selected voltage. A first relay contact (200A) can electrically connect a neutral end (14) of the winding to a neutral rail (2) to provide one selected voltage or a second relay contact (100A) can electrically short-circuit a predetermined number of turns of the winding in response to a request for a second selected voltage. When a fault condition is monitored, a third relay contact (300A) can electrically short-circuit the neutral end (14) of the winding to said predetermined position (18) to put the system into a failsafe condition which prevents turns of the winding being open circuit.
BR9508791A 1994-07-20 1995-07-20 Electricity control method and system BR9508791A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9414665A GB9414665D0 (en) 1994-07-20 1994-07-20 Improvements in and relating to control systems for electrical circuits
GBGB9504282.6A GB9504282D0 (en) 1994-07-20 1995-03-03 Improvements in and relating to control systems for electrical circuits
PCT/GB1995/001729 WO1996003018A1 (en) 1994-07-20 1995-07-20 Electrical power control system

Publications (1)

Publication Number Publication Date
BR9508791A true BR9508791A (en) 1997-12-30

Family

ID=26305306

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9508791A BR9508791A (en) 1994-07-20 1995-07-20 Electricity control method and system

Country Status (13)

Country Link
EP (1) EP0771518B1 (en)
JP (1) JP3746295B2 (en)
CN (1) CN1087585C (en)
AT (1) ATE176118T1 (en)
AU (1) AU700796B2 (en)
BR (1) BR9508791A (en)
CA (1) CA2226498C (en)
DE (1) DE69507484T2 (en)
ES (1) ES2129838T3 (en)
GB (1) GB2307119B (en)
HK (1) HK1011517A1 (en)
NZ (1) NZ289906A (en)
WO (1) WO1996003018A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9081039B2 (en) 2012-05-17 2015-07-14 GM Global Technology Operations LLC Vehicle electrical system fault detection
FR3070225B1 (en) * 2017-08-16 2019-09-20 Aksor AUTOMATIC TERMINAL
EP3975362A1 (en) 2020-09-24 2022-03-30 Volvo Truck Corporation Safety circuit for a power system of a vehicle and method for controlling the safety circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4189664A (en) * 1977-10-05 1980-02-19 Hirschfeld Richard L Power control unit for automatic control of power consumption in a lighting load
US4201938A (en) * 1978-10-02 1980-05-06 Siemens-Allis, Inc. Voltage regulator which eliminates arcing during tap changes
US4237403A (en) * 1979-04-16 1980-12-02 Berkleonics, Inc. Power supply for fluorescent lamp
US4513224A (en) * 1982-09-22 1985-04-23 Pacific Power Control, Inc. Fluorescent-lighting-system voltage controller

Also Published As

Publication number Publication date
GB2307119B (en) 1998-05-27
AU700796B2 (en) 1999-01-14
CN1155967A (en) 1997-07-30
CN1087585C (en) 2002-07-10
DE69507484D1 (en) 1999-03-04
JP3746295B2 (en) 2006-02-15
WO1996003018A1 (en) 1996-02-01
HK1011517A1 (en) 1999-07-09
CA2226498C (en) 2003-02-18
EP0771518A1 (en) 1997-05-07
JPH10504122A (en) 1998-04-14
DE69507484T2 (en) 1999-09-02
EP0771518B1 (en) 1999-01-20
NZ289906A (en) 1998-10-28
CA2226498A1 (en) 1996-02-01
ATE176118T1 (en) 1999-02-15
MX9700481A (en) 1998-10-31
ES2129838T3 (en) 1999-06-16
GB9703695D0 (en) 1997-04-09
GB2307119A (en) 1997-05-14
AU2988495A (en) 1996-02-16

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 14A ANUIDADE(S)

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AO NAO CUMPRIMENTO DO DESPACHO 24.3 NA RPI 2054 DE 18/05/2010 E COMPROVAR RECOLHIMENTO DA 15A, 16A, 17A E 18A ANUIDADES.