JPS57153580A - Speed controller for motor - Google Patents

Speed controller for motor

Info

Publication number
JPS57153580A
JPS57153580A JP56038448A JP3844881A JPS57153580A JP S57153580 A JPS57153580 A JP S57153580A JP 56038448 A JP56038448 A JP 56038448A JP 3844881 A JP3844881 A JP 3844881A JP S57153580 A JPS57153580 A JP S57153580A
Authority
JP
Japan
Prior art keywords
motor
comparator
resistors
transistor
input terminal
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.)
Pending
Application number
JP56038448A
Other languages
Japanese (ja)
Inventor
Hideo Niikura
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP56038448A priority Critical patent/JPS57153580A/en
Publication of JPS57153580A publication Critical patent/JPS57153580A/en
Pending 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

Abstract

PURPOSE:To enable the effective operation of a DC motor even if the voltage of a power source becomes low by connecting resistors in series across the motor and connecting the common connecting point of resistors to the noninverting input terminal of a comparator. CONSTITUTION:A transistor 3 forming a current mirror circuit with a transistor 2 is connected to a DC motor 1. Resistors 11, 12 are connected in series across the motor 1, and the common connecting point C of the resistors 11, 12 is connected to the noninverting input terminal of a comparator 7. The noninverting input terminal of the comparator 7 is connected to the connecting point of the transistor 2 and a positive temperature coefficient resistor 5 through a resistor 13, and is connected to a constant-current circuit 20. In this manner, since the input voltage of the comparator 7 is fallen in the input voltage operating range of the comparator 7, the effective operation of the motor can be performed even if the voltage of the power source becomes low.
JP56038448A 1981-03-17 1981-03-17 Speed controller for motor Pending JPS57153580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56038448A JPS57153580A (en) 1981-03-17 1981-03-17 Speed controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56038448A JPS57153580A (en) 1981-03-17 1981-03-17 Speed controller for motor

Publications (1)

Publication Number Publication Date
JPS57153580A true JPS57153580A (en) 1982-09-22

Family

ID=12525564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56038448A Pending JPS57153580A (en) 1981-03-17 1981-03-17 Speed controller for motor

Country Status (1)

Country Link
JP (1) JPS57153580A (en)

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