ES8401687A1 - Protection device for a power transistor - Google Patents

Protection device for a power transistor

Info

Publication number
ES8401687A1
ES8401687A1 ES516443A ES516443A ES8401687A1 ES 8401687 A1 ES8401687 A1 ES 8401687A1 ES 516443 A ES516443 A ES 516443A ES 516443 A ES516443 A ES 516443A ES 8401687 A1 ES8401687 A1 ES 8401687A1
Authority
ES
Spain
Prior art keywords
power transistor
motor
protection device
reference value
current
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
ES516443A
Other languages
Spanish (es)
Other versions
ES516443A0 (en
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.)
Equipements Automobiles Marchal SA
Original Assignee
Equipements Automobiles Marchal SA
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 Equipements Automobiles Marchal SA filed Critical Equipements Automobiles Marchal SA
Publication of ES516443A0 publication Critical patent/ES516443A0/en
Publication of ES8401687A1 publication Critical patent/ES8401687A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
    • 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
    • H02H7/0833—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 for electric motors with control arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

A DC motor (1) is connected in series with a power transistor (2). An adjustable potentiometer (3), whose tapping determines the base voltage of the power transistor (2), is used to vary the speed of the DC motor (1). In order to protect the power transistor (2) in the event of blocking of the DC motor (1), a comparator (8) is provided with compares the current through the motor (1) with a reference value and controls a relay (9, 10) in such a manner that the power transistor (2) is short-circuited if the current through the DC motor (1) is higher than the reference value.
ES516443A 1981-11-03 1982-10-13 Protection device for a power transistor Expired ES8401687A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8120583A FR2515890A1 (en) 1981-11-03 1981-11-03 PROTECTION DEVICE FOR THE CONTROL TRANSISTOR OF AN ELECTRIC MOTOR, ASSEMBLY CONSISTING OF SUCH A DEVICE AND ITS ASSOCIATED MOTOR AND USE IN A MOTOR VEHICLE

Publications (2)

Publication Number Publication Date
ES516443A0 ES516443A0 (en) 1983-12-01
ES8401687A1 true ES8401687A1 (en) 1983-12-01

Family

ID=9263649

Family Applications (1)

Application Number Title Priority Date Filing Date
ES516443A Expired ES8401687A1 (en) 1981-11-03 1982-10-13 Protection device for a power transistor

Country Status (3)

Country Link
DE (1) DE3237080A1 (en)
ES (1) ES8401687A1 (en)
FR (1) FR2515890A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106569520A (en) * 2016-11-11 2017-04-19 成都意科科技有限责任公司 Power supply monitoring module based on LCD

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563672A (en) * 1969-01-14 1971-02-16 Weldon Tool Co Pump control system
DE2352695A1 (en) * 1973-10-20 1975-04-30 Bosch Gmbh Robert SWITCH ARRANGEMENT FOR AN ELECTRIC MOTOR
DE2446300A1 (en) * 1974-09-27 1976-04-08 Siemens Ag Control device for a motor - is for motor vehicle fan protecting it against thermal overload in case of blockage
FR2310030A1 (en) * 1975-04-29 1976-11-26 Honeywell Bull Soc Ind Variable load for series control of motor - has two blocks of opposite-type transistors shorted by triac.

Also Published As

Publication number Publication date
FR2515890B1 (en) 1985-04-19
DE3237080A1 (en) 1983-05-11
FR2515890A1 (en) 1983-05-06
ES516443A0 (en) 1983-12-01

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