GB2307119A - Electrical power control system - Google Patents
Electrical power control systemInfo
- Publication number
- GB2307119A GB2307119A GB9703695A GB9703695A GB2307119A GB 2307119 A GB2307119 A GB 2307119A GB 9703695 A GB9703695 A GB 9703695A GB 9703695 A GB9703695 A GB 9703695A GB 2307119 A GB2307119 A GB 2307119A
- Authority
- GB
- United Kingdom
- Prior art keywords
- winding
- circuit
- relay contact
- power control
- electrical power
- 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.)
- Granted
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
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9703695A GB2307119B (en) | 1994-07-20 | 1995-07-20 | Electrical power control system |
Applications Claiming Priority (4)
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 |
GB9703695A GB2307119B (en) | 1994-07-20 | 1995-07-20 | Electrical power control system |
PCT/GB1995/001729 WO1996003018A1 (en) | 1994-07-20 | 1995-07-20 | Electrical power control system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9703695D0 GB9703695D0 (en) | 1997-04-09 |
GB2307119A true GB2307119A (en) | 1997-05-14 |
GB2307119B GB2307119B (en) | 1998-05-27 |
Family
ID=26305306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9703695A Revoked GB2307119B (en) | 1994-07-20 | 1995-07-20 | Electrical power control 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)
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 |
Citations (4)
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 |
-
1995
- 1995-07-20 NZ NZ289906A patent/NZ289906A/en unknown
- 1995-07-20 JP JP50484196A patent/JP3746295B2/en not_active Expired - Fee Related
- 1995-07-20 DE DE69507484T patent/DE69507484T2/en not_active Expired - Fee Related
- 1995-07-20 CA CA002226498A patent/CA2226498C/en not_active Expired - Fee Related
- 1995-07-20 ES ES95925944T patent/ES2129838T3/en not_active Expired - Lifetime
- 1995-07-20 GB GB9703695A patent/GB2307119B/en not_active Revoked
- 1995-07-20 EP EP95925944A patent/EP0771518B1/en not_active Expired - Lifetime
- 1995-07-20 BR BR9508791A patent/BR9508791A/en not_active IP Right Cessation
- 1995-07-20 CN CN95194706A patent/CN1087585C/en not_active Expired - Fee Related
- 1995-07-20 WO PCT/GB1995/001729 patent/WO1996003018A1/en active IP Right Grant
- 1995-07-20 AT AT95925944T patent/ATE176118T1/en not_active IP Right Cessation
- 1995-07-20 AU AU29884/95A patent/AU700796B2/en not_active Ceased
-
1998
- 1998-11-14 HK HK98112015A patent/HK1011517A1/en not_active IP Right Cessation
Patent Citations (4)
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 |
---|---|
MX9700481A (en) | 1998-10-31 |
CN1087585C (en) | 2002-07-10 |
ES2129838T3 (en) | 1999-06-16 |
GB2307119B (en) | 1998-05-27 |
CA2226498C (en) | 2003-02-18 |
AU2988495A (en) | 1996-02-16 |
JP3746295B2 (en) | 2006-02-15 |
JPH10504122A (en) | 1998-04-14 |
DE69507484D1 (en) | 1999-03-04 |
EP0771518A1 (en) | 1997-05-07 |
HK1011517A1 (en) | 1999-07-09 |
EP0771518B1 (en) | 1999-01-20 |
ATE176118T1 (en) | 1999-02-15 |
CN1155967A (en) | 1997-07-30 |
NZ289906A (en) | 1998-10-28 |
DE69507484T2 (en) | 1999-09-02 |
WO1996003018A1 (en) | 1996-02-01 |
GB9703695D0 (en) | 1997-04-09 |
BR9508791A (en) | 1997-12-30 |
CA2226498A1 (en) | 1996-02-01 |
AU700796B2 (en) | 1999-01-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20030720 |
|
773K | Patent revoked under sect. 73(2)/1977 |
Free format text: PATENT REVOKED ON 20040610 |