JPS5662084A - Controlling circuit for speed of motor - Google Patents

Controlling circuit for speed of motor

Info

Publication number
JPS5662084A
JPS5662084A JP13666879A JP13666879A JPS5662084A JP S5662084 A JPS5662084 A JP S5662084A JP 13666879 A JP13666879 A JP 13666879A JP 13666879 A JP13666879 A JP 13666879A JP S5662084 A JPS5662084 A JP S5662084A
Authority
JP
Japan
Prior art keywords
motor
power source
output
saw
transistor
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
JP13666879A
Other languages
Japanese (ja)
Other versions
JPS6042708B2 (en
Inventor
Toshio Hoshino
Masami Furuta
Susumu Yamamoto
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP54136668A priority Critical patent/JPS6042708B2/en
Publication of JPS5662084A publication Critical patent/JPS5662084A/en
Publication of JPS6042708B2 publication Critical patent/JPS6042708B2/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
    • H02P7/29—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 pulse modulation
    • H02P7/291—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 pulse modulation with on-off control between two set points, e.g. controlling by hysteresis

Landscapes

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

Abstract

PURPOSE:To prevent false operation due to noises from the outside and simplify constitution by a method wherein back electromotive voltage is detected during an OFF period of a motor, and compared with saw-tooth waves synchronizing with the frequency of a power source, and a transistor as a switch is controlled by the output. CONSTITUTION:Output from an AC power source 1 is rectified by means of diodes D1-D4, and applied to a DC motor 2 through a transistor Tr1 as a switching element. A detecting circuit consisting of resistance potential dividing circuits R1 and R2, a transistor Tr2 and a diode D5 is connected to the DC motor 2, and the back electromotive voltage of the motor 2 in case of the OFF of the switching element Tr1 is detected and inputted to a comparison circuit 5. On the other hand, the trapezoid- wave output voltage of a Zener diode ZD connected in parallel with the power source is applied to a saw-tooth wave generating circuit 4, and saw-tooth waves synchronized with the frequency of the power source are generated by means of a synchronizing circuit 3 and inputted to the comparison circuit 5. The Tr1 is controlled by output from the comparison circuit 5.
JP54136668A 1979-10-23 1979-10-23 Motor speed control circuit Expired JPS6042708B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54136668A JPS6042708B2 (en) 1979-10-23 1979-10-23 Motor speed control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54136668A JPS6042708B2 (en) 1979-10-23 1979-10-23 Motor speed control circuit

Publications (2)

Publication Number Publication Date
JPS5662084A true JPS5662084A (en) 1981-05-27
JPS6042708B2 JPS6042708B2 (en) 1985-09-24

Family

ID=15180690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54136668A Expired JPS6042708B2 (en) 1979-10-23 1979-10-23 Motor speed control circuit

Country Status (1)

Country Link
JP (1) JPS6042708B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261200U (en) * 1985-10-03 1987-04-16

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6261200U (en) * 1985-10-03 1987-04-16

Also Published As

Publication number Publication date
JPS6042708B2 (en) 1985-09-24

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