BR9915680A - Current limiting device - Google Patents

Current limiting device

Info

Publication number
BR9915680A
BR9915680A BR9915680-6A BR9915680A BR9915680A BR 9915680 A BR9915680 A BR 9915680A BR 9915680 A BR9915680 A BR 9915680A BR 9915680 A BR9915680 A BR 9915680A
Authority
BR
Brazil
Prior art keywords
load
semiconductor device
current limiting
limiting device
current flow
Prior art date
Application number
BR9915680-6A
Other languages
Portuguese (pt)
Inventor
Nigel Paul Andrew Smith
Original Assignee
Nigel Paul Andrew Smith
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 Nigel Paul Andrew Smith filed Critical Nigel Paul Andrew Smith
Publication of BR9915680A publication Critical patent/BR9915680A/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • H02H9/025—Current limitation using field effect transistors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

"DISPOSITIVO LIMITADOR DE CORRENTE" Trata-se de um dispositivo limitador de corrente para ligação, em uso, entre uma fonte de energia de linhas de alimentação AC e uma carga. A unidade tem um dispositivo semicondutor controlável Q3 na trajetória condutora de corrente entre a fonte e a carga. Também na trajetória há um resistor detector R2. A unidade tem também dispositivos que respondem à voltagem desenvolvida através do resistor detector R2. O dispositivo de circuito atua de modo a desligar o dispositivo semicondutor no caso de o fluxo de corrente na carga ultrapassar um nível predeterminado. é permitido ao fluxo de corrente ultrapassar o nível predeterminado por um período de tempo, o período sendo menor para correntes excessivas mais elevadas, e o desligamento é virtualmente instantâneo no caso de um curto circuito da carga ou um fluxo de corrente súbito ou muito elevado. O dispositivo semicondutor pode ser novamente ligado depois do desligamento, mas somente depois que um tempo predeterminado tiver decorrido e não até que a carga seja desligada."CURRENT LIMITING DEVICE" This is a current limiting device for connecting, in use, between an AC power supply and a load. The unit has a controllable semiconductor device Q3 in the current-conducting path between the source and the load. Also on the path there is a detector resistor R2. The unit also has devices that respond to the voltage developed through the detector resistor R2. The circuit device acts to shut down the semiconductor device in case the current flow in the load exceeds a predetermined level. current flow is allowed to exceed the predetermined level for a period of time, the period being shorter for higher excessive currents, and shutdown is virtually instantaneous in the event of a load short circuit or a sudden or very high current flow. The semiconductor device can be switched on again after switching off, but only after a predetermined time has elapsed and not until the load is switched off.

BR9915680-6A 1998-11-26 1999-11-26 Current limiting device BR9915680A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9825772.8A GB9825772D0 (en) 1998-11-26 1998-11-26 Electronic control unit
PCT/GB1999/003949 WO2000031851A1 (en) 1998-11-26 1999-11-26 Current limiting device

Publications (1)

Publication Number Publication Date
BR9915680A true BR9915680A (en) 2001-08-14

Family

ID=10842984

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915680-6A BR9915680A (en) 1998-11-26 1999-11-26 Current limiting device

Country Status (7)

Country Link
CN (1) CN1334984B (en)
AP (1) AP1325A (en)
AU (1) AU1287500A (en)
BR (1) BR9915680A (en)
GB (2) GB9825772D0 (en)
WO (1) WO2000031851A1 (en)
ZA (1) ZA200104909B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1941531B (en) * 2005-09-27 2010-07-21 浩阳半导体股份有限公司 Three-sectional protection method for resisting overcurrent
CN102684178B (en) * 2011-03-11 2015-05-06 同方泰德国际科技(北京)有限公司 Multi-output circuit using power supply load short-circuit protection circuit
CN112769093B (en) * 2019-11-05 2023-12-29 杭州海康威视数字技术股份有限公司 Current-limiting control circuit, chip and power supply

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69315308T2 (en) * 1992-12-04 1998-03-19 Texas Instruments Inc Semiconductor power controller
IL115797A0 (en) * 1994-11-02 1996-01-19 Raychem Corp Solid state resettable overcurrent protection device
US5666254A (en) * 1995-09-14 1997-09-09 Raychem Corporation Voltage sensing overcurrent protection circuit

Also Published As

Publication number Publication date
GB2359204B (en) 2003-02-19
CN1334984B (en) 2010-06-23
CN1334984A (en) 2002-02-06
GB0112029D0 (en) 2001-07-11
GB2359204A (en) 2001-08-15
ZA200104909B (en) 2001-12-20
WO2000031851A1 (en) 2000-06-02
AP2001002148A0 (en) 2001-06-30
AU1287500A (en) 2000-06-13
GB9825772D0 (en) 1999-01-20
AP1325A (en) 2004-11-12

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Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion)
B09B Decision: refusal

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B09B Decision: refusal

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