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JPS5469709A - Speed controller for motor - Google Patents

Speed controller for motor

Info

Publication number
JPS5469709A
JPS5469709A JP13710877A JP13710877A JPS5469709A JP S5469709 A JPS5469709 A JP S5469709A JP 13710877 A JP13710877 A JP 13710877A JP 13710877 A JP13710877 A JP 13710877A JP S5469709 A JPS5469709 A JP S5469709A
Authority
JP
Japan
Prior art keywords
motor
voltage
turned
time
put20
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
JP13710877A
Other languages
Japanese (ja)
Inventor
Takeshi Uno
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13710877A priority Critical patent/JPS5469709A/en
Publication of JPS5469709A publication Critical patent/JPS5469709A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To prevent a motor from abnormal vibration, by such method that with a sinusoidal wave of the power source converted into a voltage wave form, time division processed turning on-off in a long period, this voltage be applied to the motor.
CONSTITUTION: If a potential of condenser 19 of a time division circuit 15 comes to be above a voltage divided by resistors 24, 25, PUT 20 is turned on only during a constant time specified by a holding current of 19 to 21. On the other hand, off-time of the PUT20 will be specified by a charging time for a voltage of the condenser 19 to reach a divided value of the resistors 24, 25, being adjusted by a variable resistor 17. An output of the PUT20 controls a transistor 22, being fed to a gate signal circuit 4 of a thyristor 2 through a photocoupler 11. At a time with the photocoupler 11 turned on, a transistor 9 comes to be turned off and a thyristor 5 turned on, to accelerate a speed of the motor. In this way, as a main cause for generation of a higher harmonic component can be removed from the voltage wave form to be applied to the motor, the motor will be able to be prevented from abnormal vibration.
COPYRIGHT: (C)1979,JPO&Japio
JP13710877A 1977-11-14 1977-11-14 Speed controller for motor Pending JPS5469709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13710877A JPS5469709A (en) 1977-11-14 1977-11-14 Speed controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13710877A JPS5469709A (en) 1977-11-14 1977-11-14 Speed controller for motor

Publications (1)

Publication Number Publication Date
JPS5469709A true JPS5469709A (en) 1979-06-05

Family

ID=15191025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13710877A Pending JPS5469709A (en) 1977-11-14 1977-11-14 Speed controller for motor

Country Status (1)

Country Link
JP (1) JPS5469709A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646689A (en) * 1979-09-25 1981-04-27 Sanyo Electric Co Ltd Motor speed control system
JPS6221797U (en) * 1985-07-19 1987-02-09

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646689A (en) * 1979-09-25 1981-04-27 Sanyo Electric Co Ltd Motor speed control system
JPS6221797U (en) * 1985-07-19 1987-02-09

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