JPS5641788A - Controlling circuit for transistor motor - Google Patents
Controlling circuit for transistor motorInfo
- Publication number
- JPS5641788A JPS5641788A JP11771079A JP11771079A JPS5641788A JP S5641788 A JPS5641788 A JP S5641788A JP 11771079 A JP11771079 A JP 11771079A JP 11771079 A JP11771079 A JP 11771079A JP S5641788 A JPS5641788 A JP S5641788A
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- potential
- hall element
- current
- operation amplifier
- 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 Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To prevent the generation of the torque ripples in the transistor motor by feeding back the voltage having a value corresponding to an armature current to an operation amplifier which is inserted between a Hall element and a transistor for driving armature windings. CONSTITUTION:When the potential at the output terminal c of a Hall element 6 is larger than the potential at the output terminal d thereof, the sine wave output from the Hall element is amplified at a constant gain determined by resistors 24, 25, and 28 in an operation amplifier 34, and drives a transistor 8. When the potential at the point d is larger than the potential at the point c, the transistor 8 is cut off. On the other hand, the voltage whose value corresponds to the current of armature windings 12 and 14 is fed back to the reverse phase input terminal of the operation amplifier 34 from the emitter of the transistor 8 via the resistors 24 and 25. In this constitution, the collector current, i.e., the armature current flows at a constant gain, without regard to the characteristics of the transistor, and the sine wave current corresponding to the output of the Hall element is generated
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11771079A JPS5641788A (en) | 1979-09-11 | 1979-09-11 | Controlling circuit for transistor motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11771079A JPS5641788A (en) | 1979-09-11 | 1979-09-11 | Controlling circuit for transistor motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5641788A true JPS5641788A (en) | 1981-04-18 |
Family
ID=14718382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11771079A Pending JPS5641788A (en) | 1979-09-11 | 1979-09-11 | Controlling circuit for transistor motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5641788A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0549288A (en) * | 1991-08-08 | 1993-02-26 | Rohm Co Ltd | Motor controller and control circuit |
JP2009106084A (en) * | 2007-10-23 | 2009-05-14 | Rohm Co Ltd | Circuit and method for driving motor, and cooling device using it |
US8362723B2 (en) | 2007-10-23 | 2013-01-29 | Rohm Co., Ltd. | Motor drive circuit |
-
1979
- 1979-09-11 JP JP11771079A patent/JPS5641788A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0549288A (en) * | 1991-08-08 | 1993-02-26 | Rohm Co Ltd | Motor controller and control circuit |
JP2009106084A (en) * | 2007-10-23 | 2009-05-14 | Rohm Co Ltd | Circuit and method for driving motor, and cooling device using it |
US8362723B2 (en) | 2007-10-23 | 2013-01-29 | Rohm Co., Ltd. | Motor drive circuit |
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