JPS5529270A - Ac motor speed control circuit - Google Patents

Ac motor speed control circuit

Info

Publication number
JPS5529270A
JPS5529270A JP10220878A JP10220878A JPS5529270A JP S5529270 A JPS5529270 A JP S5529270A JP 10220878 A JP10220878 A JP 10220878A JP 10220878 A JP10220878 A JP 10220878A JP S5529270 A JPS5529270 A JP S5529270A
Authority
JP
Japan
Prior art keywords
motor
triode
power supply
multivibrator
switch
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
JP10220878A
Other languages
Japanese (ja)
Inventor
Minoru Hasegawa
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.)
UNION DENSHI KOGYO KK
UNION ELECTRONICS IND
Original Assignee
UNION DENSHI KOGYO KK
UNION ELECTRONICS IND
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 UNION DENSHI KOGYO KK, UNION ELECTRONICS IND filed Critical UNION DENSHI KOGYO KK
Priority to JP10220878A priority Critical patent/JPS5529270A/en
Publication of JPS5529270A publication Critical patent/JPS5529270A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To largely vary the AC motor speed in the state that torque is retained substantially constant by providing a trigger circuit for controlling on and off of a triode AC switch in every any cycle number of AC power supply.
CONSTITUTION: An AC power supply AC is connected through a triode AC switch TR to an AC motor M, and connected with unstable multivibrator 2 including transistors TR1, TR2 via a constant voltage power supply circuit 1 having zener diode ZD to thereby drive the trigger circuit 3 of the triode AC switch TRC. Thus, the pulse duration of the multivibrator is optionally selected by controlling the resistance of a variable resistor VR1 of the multivibrator 2 to thereby retain the staring torque substantially equal to the rated time as the entire motor M even if the mean power supplied to the motor M is very low so as to vary the speed of the motor under substantially constant torque.
COPYRIGHT: (C)1980,JPO&Japio
JP10220878A 1978-08-22 1978-08-22 Ac motor speed control circuit Pending JPS5529270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10220878A JPS5529270A (en) 1978-08-22 1978-08-22 Ac motor speed control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10220878A JPS5529270A (en) 1978-08-22 1978-08-22 Ac motor speed control circuit

Publications (1)

Publication Number Publication Date
JPS5529270A true JPS5529270A (en) 1980-03-01

Family

ID=14321237

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10220878A Pending JPS5529270A (en) 1978-08-22 1978-08-22 Ac motor speed control circuit

Country Status (1)

Country Link
JP (1) JPS5529270A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139694A (en) * 1982-02-12 1983-08-19 Daiko Denki Kk Low speed operating circuit for motor
JPS6274499U (en) * 1985-10-29 1987-05-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139694A (en) * 1982-02-12 1983-08-19 Daiko Denki Kk Low speed operating circuit for motor
JPS6274499U (en) * 1985-10-29 1987-05-13

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