JPS5619394A - Dc motor control circuit - Google Patents
Dc motor control circuitInfo
- Publication number
- JPS5619394A JPS5619394A JP9157379A JP9157379A JPS5619394A JP S5619394 A JPS5619394 A JP S5619394A JP 9157379 A JP9157379 A JP 9157379A JP 9157379 A JP9157379 A JP 9157379A JP S5619394 A JPS5619394 A JP S5619394A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- potential
- altered
- reference voltages
- output voltage
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- 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
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE:To remove the affect of an offset of the output voltage and the irregularity of the sensitivity of a magnetic feild detector in a DC motor control circuit by limiting the amplified output voltage of the magnetic field detector to upper and lower reference voltages of the neutral potential of the variable and fixed reference voltages as a center. CONSTITUTION:The output voltage of the Hall element 46 is amplified by the differential amplifier 49 around the neutral potential VC of the reference voltages VA, VB as a center, is limited at the upper and the lower amplitudes by the diodes 52 and 55 to the voltages VA and VB, and applied through power transistors 58, 59 to a stator coil 64. The voltage VB is fixed by the constant voltage diode 23, and the voltage VA is altered by varying the base potential vs of a transistor 21. When the voltage VA is altered, the potential VC is simultaneously altered. Thus, even if the DC potential of the drive voltage waveform is varied, the phase of the point D for switching the current is not altered so that the drive current is switched symmetrically at the positive and negative going manner.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9157379A JPS5619394A (en) | 1979-07-20 | 1979-07-20 | Dc motor control circuit |
US06/169,795 US4356437A (en) | 1979-07-20 | 1980-07-17 | Control circuit for DC motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9157379A JPS5619394A (en) | 1979-07-20 | 1979-07-20 | Dc motor control circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5619394A true JPS5619394A (en) | 1981-02-24 |
JPS6210119B2 JPS6210119B2 (en) | 1987-03-04 |
Family
ID=14030263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9157379A Granted JPS5619394A (en) | 1979-07-20 | 1979-07-20 | Dc motor control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5619394A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4760315A (en) * | 1985-09-20 | 1988-07-26 | Sony Corporation | Brushless motor drive circuit |
US5349275A (en) * | 1981-12-23 | 1994-09-20 | Papst Licensing Gmbh | Brushless direct current motor |
USRE36860E (en) * | 1981-12-23 | 2000-09-12 | Papst Licensing Gmbh & Co. Kg | Brushless direct current motor |
JP2002325479A (en) * | 2001-04-26 | 2002-11-08 | New Japan Radio Co Ltd | Motor control circuit |
-
1979
- 1979-07-20 JP JP9157379A patent/JPS5619394A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5349275A (en) * | 1981-12-23 | 1994-09-20 | Papst Licensing Gmbh | Brushless direct current motor |
USRE36860E (en) * | 1981-12-23 | 2000-09-12 | Papst Licensing Gmbh & Co. Kg | Brushless direct current motor |
US4760315A (en) * | 1985-09-20 | 1988-07-26 | Sony Corporation | Brushless motor drive circuit |
JP2002325479A (en) * | 2001-04-26 | 2002-11-08 | New Japan Radio Co Ltd | Motor control circuit |
JP4677120B2 (en) * | 2001-04-26 | 2011-04-27 | 新日本無線株式会社 | Motor control circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6210119B2 (en) | 1987-03-04 |
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