JPS5529270A - Ac motor speed control circuit - Google Patents
Ac motor speed control circuitInfo
- 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
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
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)
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 |
-
1978
- 1978-08-22 JP JP10220878A patent/JPS5529270A/en active Pending
Cited By (2)
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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