FR2379930A1 - Agencement de circuit de protection contre les surcharges - Google Patents

Agencement de circuit de protection contre les surcharges

Info

Publication number
FR2379930A1
FR2379930A1 FR7803415A FR7803415A FR2379930A1 FR 2379930 A1 FR2379930 A1 FR 2379930A1 FR 7803415 A FR7803415 A FR 7803415A FR 7803415 A FR7803415 A FR 7803415A FR 2379930 A1 FR2379930 A1 FR 2379930A1
Authority
FR
France
Prior art keywords
overload protection
protection circuit
circuit layout
impedance
light
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
Application number
FR7803415A
Other languages
English (en)
Other versions
FR2379930B1 (fr
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.)
Associated Engineering Ltd
Original Assignee
Associated Engineering Ltd
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 Associated Engineering Ltd filed Critical Associated Engineering Ltd
Publication of FR2379930A1 publication Critical patent/FR2379930A1/fr
Application granted granted Critical
Publication of FR2379930B1 publication Critical patent/FR2379930B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H1/00—Details of emergency protective circuit arrangements
    • H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
    • H02H1/0069—Details of emergency protective circuit arrangements concerning transmission of signals by means of light or heat rays
    • 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

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Protection Of Generators And Motors (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Electric Motors In General (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

L'invention concerne un agencement de circuit de protection Une impédance 27 est connectée dans le circuit d'alimentation d'un moteur électrique 10 et deux diodes à luminescence 28, 30 sont connectées en parallèle et avec des polarités opposées à cette impédance. Un photo-transistor respectif 40 est associé à chaque diode 28, 30 et répond à ses sorties lumineuses pour provoquer une interruption du courant d'alimentation. Utilisation dans le domaine des dispositifs de protection contre les surcharges.
FR7803415A 1977-02-08 1978-02-07 Agencement de circuit de protection contre les surcharges Granted FR2379930A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5069/77A GB1594121A (en) 1977-02-08 1977-02-08 Electrical protection circuits

Publications (2)

Publication Number Publication Date
FR2379930A1 true FR2379930A1 (fr) 1978-09-01
FR2379930B1 FR2379930B1 (fr) 1984-05-18

Family

ID=9789181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803415A Granted FR2379930A1 (fr) 1977-02-08 1978-02-07 Agencement de circuit de protection contre les surcharges

Country Status (12)

Country Link
US (1) US4177492A (fr)
AU (1) AU514559B2 (fr)
BE (1) BE863780A (fr)
CA (1) CA1087677A (fr)
DE (1) DE2803826A1 (fr)
DK (1) DK56478A (fr)
FR (1) FR2379930A1 (fr)
GB (1) GB1594121A (fr)
IT (1) IT1103610B (fr)
NL (1) NL7801375A (fr)
SE (1) SE440165B (fr)
ZA (1) ZA78742B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4394607A (en) * 1981-05-08 1983-07-19 Stanley Automatic Openers Control systems for gates and the like including a motor overload monitoring circuit
US4477758A (en) * 1983-06-10 1984-10-16 The Superior Electric Company Stepping motor overcurrent detection and protection device
US4663537A (en) * 1984-07-03 1987-05-05 Keiper Recaro Gmbh & Co. Protective circuit
US4547715A (en) * 1984-07-09 1985-10-15 Motorola, Inc. Current control circuit
JPS61260508A (ja) * 1985-05-15 1986-11-18 株式会社　神内電機製作所 接点溶着検出装置
JP2656370B2 (ja) * 1990-05-31 1997-09-24 株式会社東芝 過大電流検出装置
JP2006281404A (ja) 2005-04-04 2006-10-19 Hitachi Koki Co Ltd コードレス電動工具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1423393A (fr) * 1964-02-05 1966-01-03 Rca Corp Montage de limitation d'intensité, notamment pour circuits d'amplification à transistors
FR2252682A1 (en) * 1973-11-22 1975-06-20 Simplex Appareils Electronic circuit-breaker for transformer - thermocouple and resistor detect large and small overloads
DE2513227A1 (de) * 1975-03-25 1976-09-30 Siemens Ag Schutzeinrichtung fuer umrichter
FR2314502A1 (fr) * 1975-06-10 1977-01-07 Alsthom Cgee Dispositif de mesure de fuites electriques

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1590127A1 (de) * 1966-06-23 1970-01-22 Bbc Brown Boveri & Cie Steuervorrichtung
DE2219043A1 (de) * 1972-04-19 1973-10-31 Chemie Elektronik Und Verfahre Laststromwaechter fuer wechselstromverbraucher
CA1006606A (en) * 1972-05-22 1977-03-08 Katsuyuki Totsu Motor-driven screw driver with automatic stopping means
US3925709A (en) * 1973-08-13 1975-12-09 Westinghouse Electric Corp Overcurrent protection circuit for AC systems
US4061961A (en) * 1976-07-02 1977-12-06 United Air Specialists, Inc. Circuit for controlling the duty cycle of an electrostatic precipitator power supply

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1423393A (fr) * 1964-02-05 1966-01-03 Rca Corp Montage de limitation d'intensité, notamment pour circuits d'amplification à transistors
FR2252682A1 (en) * 1973-11-22 1975-06-20 Simplex Appareils Electronic circuit-breaker for transformer - thermocouple and resistor detect large and small overloads
DE2513227A1 (de) * 1975-03-25 1976-09-30 Siemens Ag Schutzeinrichtung fuer umrichter
FR2314502A1 (fr) * 1975-06-10 1977-01-07 Alsthom Cgee Dispositif de mesure de fuites electriques

Also Published As

Publication number Publication date
CA1087677A (fr) 1980-10-14
US4177492A (en) 1979-12-04
ZA78742B (en) 1979-01-31
AU3245978A (en) 1979-07-26
GB1594121A (en) 1981-07-30
NL7801375A (nl) 1978-08-10
IT1103610B (it) 1985-10-14
AU514559B2 (en) 1981-02-19
SE7801317L (sv) 1978-08-09
DE2803826A1 (de) 1978-08-10
IT7809339A0 (it) 1978-02-07
SE440165B (sv) 1985-07-15
FR2379930B1 (fr) 1984-05-18
DK56478A (da) 1978-08-09
BE863780A (fr) 1978-08-08

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Legal Events

Date Code Title Description
ST Notification of lapse