JPS5788888A - Drive control circuit for motor - Google Patents

Drive control circuit for motor

Info

Publication number
JPS5788888A
JPS5788888A JP16469880A JP16469880A JPS5788888A JP S5788888 A JPS5788888 A JP S5788888A JP 16469880 A JP16469880 A JP 16469880A JP 16469880 A JP16469880 A JP 16469880A JP S5788888 A JPS5788888 A JP S5788888A
Authority
JP
Japan
Prior art keywords
motor
becomes
transistor
voltage
control circuit
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
JP16469880A
Other languages
Japanese (ja)
Other versions
JPS648558B2 (en
Inventor
Yoshiharu Tada
Kunihiro Takeuchi
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.)
Bosch Corp
Original Assignee
Diesel Kiki Co 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 Diesel Kiki Co Ltd filed Critical Diesel Kiki Co Ltd
Priority to JP16469880A priority Critical patent/JPS5788888A/en
Publication of JPS5788888A publication Critical patent/JPS5788888A/en
Publication of JPS648558B2 publication Critical patent/JPS648558B2/ja
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
    • H02H7/0811—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 dc motors

Landscapes

  • Control Of Direct Current Motors (AREA)

Abstract

PURPOSE:To prevent the damage of a motor by detecting the decrease in the motor speed due to an overload by the decrease in counterelectromotive force of the motor and stopping the supply of voltage to the motor. CONSTITUTION:The output voltage V2 of an operational amplifier 10 is varied in response to the input voltage V1, and the base currents of transistors 17, 18 will thereby vary. When the motor M becomes an overload state so that the rotating speed is decelerated, the counterelectromotive force (e) becomes low and the current IC increases. Thus, the emitter voltage VE of the transistor 17 is raised, and the output voltage V2 of the amplifier 10 is lowered, thereby interrupting the transistor 13. When the transistor 13 becomes OFF, the drive circuit 19 becomes in OFF state, and the current IC becomes zero. Thus, a protecting operation having good responsiveness can be obtained.
JP16469880A 1980-11-25 1980-11-25 Drive control circuit for motor Granted JPS5788888A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16469880A JPS5788888A (en) 1980-11-25 1980-11-25 Drive control circuit for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16469880A JPS5788888A (en) 1980-11-25 1980-11-25 Drive control circuit for motor

Publications (2)

Publication Number Publication Date
JPS5788888A true JPS5788888A (en) 1982-06-02
JPS648558B2 JPS648558B2 (en) 1989-02-14

Family

ID=15798163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16469880A Granted JPS5788888A (en) 1980-11-25 1980-11-25 Drive control circuit for motor

Country Status (1)

Country Link
JP (1) JPS5788888A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542872A1 (en) * 1983-03-18 1984-09-21 Etri Sa
JPS6295986A (en) * 1985-10-21 1987-05-02 Omron Tateisi Electronics Co Speed control circuit for dc motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542872A1 (en) * 1983-03-18 1984-09-21 Etri Sa
US4580082A (en) * 1983-03-18 1986-04-01 Etudes Techniques Et Representations Industrielles E.T.R.I. Method and devices for detecting whether a direct-current motor has slowed-down and a motor equipped with a device of this type
JPS6295986A (en) * 1985-10-21 1987-05-02 Omron Tateisi Electronics Co Speed control circuit for dc motor

Also Published As

Publication number Publication date
JPS648558B2 (en) 1989-02-14

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