CA1165396A - Self-calibrating overcurrent detector - Google Patents

Self-calibrating overcurrent detector

Info

Publication number
CA1165396A
CA1165396A CA000371908A CA371908A CA1165396A CA 1165396 A CA1165396 A CA 1165396A CA 000371908 A CA000371908 A CA 000371908A CA 371908 A CA371908 A CA 371908A CA 1165396 A CA1165396 A CA 1165396A
Authority
CA
Canada
Prior art keywords
voltage
gate
during
initialization cycle
input
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
CA000371908A
Other languages
English (en)
French (fr)
Inventor
Anthony J. Rice
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of CA1165396A publication Critical patent/CA1165396A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
    • 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
    • H02H3/006—Calibration or setting of parameters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
CA000371908A 1980-04-10 1981-02-27 Self-calibrating overcurrent detector Expired CA1165396A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8008341 1980-04-10
FR8008341A FR2485284A1 (fr) 1980-04-10 1980-04-10 Circuit de detection de courant de defaut

Publications (1)

Publication Number Publication Date
CA1165396A true CA1165396A (en) 1984-04-10

Family

ID=9240842

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000371908A Expired CA1165396A (en) 1980-04-10 1981-02-27 Self-calibrating overcurrent detector

Country Status (6)

Country Link
US (1) US4375072A (en:Method)
EP (1) EP0037885B1 (en:Method)
JP (1) JPS56154672A (en:Method)
CA (1) CA1165396A (en:Method)
DE (1) DE3164945D1 (en:Method)
FR (1) FR2485284A1 (en:Method)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123627A (en) * 1982-04-08 1984-02-01 David Alan Dolbey Jones Electrical circuit interruption
US4625283A (en) * 1982-05-07 1986-11-25 Cooper Industries, Inc. Method and apparatus for digitally measuring alternating current
US4677581A (en) * 1985-05-30 1987-06-30 Allied Corporation Multichannel, self-calibrating, analog input/output apparatus for generating and measuring DC stimuli
US4720758A (en) * 1985-07-26 1988-01-19 Tektronix, Inc. Load dependent current limiter for the power supply of a multi-module electronic system
EP0211507A1 (en) * 1985-07-26 1987-02-25 Tektronix, Inc. Load-dependent current limiter for the power supply of a multi-module electronia system
US4713553A (en) * 1985-10-21 1987-12-15 Motorola Inc. Fast power-fail detector for power supplies with energy hysteresis
US4796142A (en) * 1986-10-16 1989-01-03 Square D Company Overload protection apparatus for emulating the response of a thermal overload
IT1219951B (it) * 1988-05-31 1990-05-24 Giancarlo Sacerdoti Dispositivo di sicurezza per la rilevazione della corrente di terra e spina elettrica di sicurezza dotata di tale dispositivo
EP0370139B1 (en) * 1988-11-22 1993-09-15 Mitsubishi Denki Kabushiki Kaisha Circuit breaker with overcurrent protection
DE3841186A1 (de) * 1988-12-07 1990-06-13 Asea Brown Boveri Einrichtung fuer elektrische verbraucher
US5272585A (en) * 1991-06-27 1993-12-21 Gibbs John H System to prevent electrical shorts by a microprocessor breaker box
US5506789A (en) * 1993-10-15 1996-04-09 The Texas A & M University System Load extraction fault detection system
JP3233557B2 (ja) * 1995-07-21 2001-11-26 シャープ株式会社 半導体集積回路の閾値特性測定方法および装置
CN101661055B (zh) * 2008-08-27 2011-07-13 中兴通讯股份有限公司 一种有源电路电流告警的方法及装置
DK2241344T3 (en) * 2009-04-16 2014-03-03 Hoffmann La Roche Portable infusion with feel-testing device
US8698505B2 (en) * 2009-08-06 2014-04-15 Yokogawa Electric Corporation Measurement apparatus detecting consumption current of a display
CN102074928B (zh) * 2009-11-20 2015-01-14 北京普源精电科技有限公司 一种恒压恒流电源及其过压、过流保护的自校准方法
CN102681531B (zh) * 2012-05-10 2014-02-05 四川金网通电子科技有限公司 一种实现电机控制器限流电流值自校准的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3626262A (en) * 1969-08-22 1971-12-07 Gen Electric No-load torque compensation system and the application thereof in adaptive control
US3979255A (en) * 1973-09-04 1976-09-07 Combustion Engineering, Inc. Method for operating a system with a variable excursion margin setpoint
US4012669A (en) * 1975-08-29 1977-03-15 Envirotech Corporation Electronic overload detecting device
US4208625A (en) * 1976-02-23 1980-06-17 Micro Sensors, Inc. Capacitive measuring system with automatic calibration
DE2609654B2 (de) * 1976-03-09 1978-01-05 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Digitaler ueberstromausloeser
US4160282A (en) * 1977-10-03 1979-07-03 Consolidation Coal Company Overcurrent protection apparatus

Also Published As

Publication number Publication date
JPH05666B2 (en:Method) 1993-01-06
DE3164945D1 (en) 1984-08-30
EP0037885B1 (fr) 1984-07-25
US4375072A (en) 1983-02-22
FR2485284A1 (fr) 1981-12-24
JPS56154672A (en) 1981-11-30
EP0037885A1 (fr) 1981-10-21

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