FR2392522A1 - INSTALLATION OF CIRCUITS FOR ELECTRONIC ROTATIONAL TORQUE LIMITATION - Google Patents

INSTALLATION OF CIRCUITS FOR ELECTRONIC ROTATIONAL TORQUE LIMITATION

Info

Publication number
FR2392522A1
FR2392522A1 FR7815990A FR7815990A FR2392522A1 FR 2392522 A1 FR2392522 A1 FR 2392522A1 FR 7815990 A FR7815990 A FR 7815990A FR 7815990 A FR7815990 A FR 7815990A FR 2392522 A1 FR2392522 A1 FR 2392522A1
Authority
FR
France
Prior art keywords
voltage
proportional
motor
circuits
installation
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
FR7815990A
Other languages
French (fr)
Other versions
FR2392522B1 (en
Inventor
Bauder Gerhard
Dorner Hans-Dieter
Specht Gunter
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.)
C&E Fein GmbH and Co
Original Assignee
C&E Fein GmbH and Co
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 C&E Fein GmbH and Co filed Critical C&E Fein GmbH and Co
Publication of FR2392522A1 publication Critical patent/FR2392522A1/en
Application granted granted Critical
Publication of FR2392522B1 publication Critical patent/FR2392522B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Direct Current Motors (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

In the case of a motor (M1), in order to interrupt the power supply automatically and in a controlled manner on reaching a preselectable load torque, the circuit arrangement has load resistors (RL) on which a voltage can be picked off which is proportional to the load on the motor (M1). An amplifier circuit, for amplifying the proportional voltage, is formed by components (OP1, P1, P2, R1, R2). The voltage, which is proportional to the starting current, is suppressed by components (Tr1, P3, C3). The AC voltage which is picked off at the amplifier output is rectified by a diode (D3). A zener diode (ZD1) drives a thyristor (Th1) when its breakdown voltage is exceeded. A disconnection element (Re1) interrupts the power supply to the motor (M1).
FR7815990A 1977-05-28 1978-05-23 INSTALLATION OF CIRCUITS FOR ELECTRONIC ROTATIONAL TORQUE LIMITATION Granted FR2392522A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772724293 DE2724293C2 (en) 1977-05-28 1977-05-28 Electronic circuit arrangement for torque limitation

Publications (2)

Publication Number Publication Date
FR2392522A1 true FR2392522A1 (en) 1978-12-22
FR2392522B1 FR2392522B1 (en) 1984-06-08

Family

ID=6010168

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7815990A Granted FR2392522A1 (en) 1977-05-28 1978-05-23 INSTALLATION OF CIRCUITS FOR ELECTRONIC ROTATIONAL TORQUE LIMITATION

Country Status (3)

Country Link
CH (1) CH629040A5 (en)
DE (1) DE2724293C2 (en)
FR (1) FR2392522A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446240A1 (en) * 1984-12-19 1986-06-26 Preh, Industrieausrüstungen GmbH, 8740 Bad Neustadt DRIVE DEVICE
DE3611884A1 (en) * 1986-04-09 1987-10-22 Fein C & E Hand tool, especially a screwdriver, driven by a rechargeable battery (accumulator)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326027A1 (en) * 1972-05-22 1973-12-20 Katsuyuki Totsu SCREWDRIVER
US3875464A (en) * 1973-10-10 1975-04-01 Westinghouse Electric Corp Solid state overload relay
GB1449738A (en) * 1974-03-19 1976-09-15 Do Ni I Pk I Avtomatizat Izats Protection devices for electric machines
NL7612536A (en) * 1975-11-14 1977-05-17 Atlas Copco Ab ELECTRIC WRENCH.
FR2342571A1 (en) * 1976-02-24 1977-09-23 Klaxon Sa DC motor overload protection circuit - is for vehicle window operation and reverses motor operation when obstructed

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588032A1 (en) * 1966-03-18 1970-06-25 Biviator Sa Electrical limiting circuit

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2326027A1 (en) * 1972-05-22 1973-12-20 Katsuyuki Totsu SCREWDRIVER
FR2185480A1 (en) * 1972-05-22 1974-01-04 Totsu Katsuyuki
US3875464A (en) * 1973-10-10 1975-04-01 Westinghouse Electric Corp Solid state overload relay
GB1449738A (en) * 1974-03-19 1976-09-15 Do Ni I Pk I Avtomatizat Izats Protection devices for electric machines
NL7612536A (en) * 1975-11-14 1977-05-17 Atlas Copco Ab ELECTRIC WRENCH.
FR2331423A1 (en) * 1975-11-14 1977-06-10 Atlas Copco Ab ELECTRIC NUT CLAMP
FR2342571A1 (en) * 1976-02-24 1977-09-23 Klaxon Sa DC motor overload protection circuit - is for vehicle window operation and reverses motor operation when obstructed

Also Published As

Publication number Publication date
DE2724293C2 (en) 1984-09-06
DE2724293A1 (en) 1978-12-07
FR2392522B1 (en) 1984-06-08
CH629040A5 (en) 1982-03-31

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Legal Events

Date Code Title Description
ST Notification of lapse