JPS5681089A - Speed controlling circuit for dc motor - Google Patents
Speed controlling circuit for dc motorInfo
- Publication number
- JPS5681089A JPS5681089A JP15433879A JP15433879A JPS5681089A JP S5681089 A JPS5681089 A JP S5681089A JP 15433879 A JP15433879 A JP 15433879A JP 15433879 A JP15433879 A JP 15433879A JP S5681089 A JPS5681089 A JP S5681089A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- motor
- becomes
- 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.)
- Pending
Links
Classifications
-
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
- H02P7/2885—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE:To heighten a starting torque, by providing a transistor detecting overload condition of a DC motor. CONSTITUTION:A reference voltage generating circuit 11, a voltage comparison circuit 12, an output circuit 13 and a constant current circuit 14 are formed in a monolithic IC to constitute a speed control circuit of a DC motor. As an output of the reference voltage generating circuit 11 generates in input on one side of the voltage comparison current 12 and an output of the output circuit 13 (current mirror circuit) is fed back to an input on the other side of the circuit 12, a DC motor is so controlled that a reverse electromotive force Ea becomes a constant voltage and driven at a constant rotating speed. In the condition that the DC motor is locked like starting time, a voltage between IC terminals (1) and (2) becomes almost zero volt and a transistor Q4 becomes OFF, and therefore, transistors Q2 and Q3 become OFF and ON, respectively, and a starting torque becomes heightened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433879A JPS5681089A (en) | 1979-11-30 | 1979-11-30 | Speed controlling circuit for dc motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15433879A JPS5681089A (en) | 1979-11-30 | 1979-11-30 | Speed controlling circuit for dc motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5681089A true JPS5681089A (en) | 1981-07-02 |
Family
ID=15581961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15433879A Pending JPS5681089A (en) | 1979-11-30 | 1979-11-30 | Speed controlling circuit for dc motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5681089A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589589A (en) * | 1981-07-09 | 1983-01-19 | Mitsumi Electric Co Ltd | Speed control circuit for compact dc motor |
| JPH02133087A (en) * | 1988-11-10 | 1990-05-22 | Nec Corp | Motor speed control circuit |
-
1979
- 1979-11-30 JP JP15433879A patent/JPS5681089A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS589589A (en) * | 1981-07-09 | 1983-01-19 | Mitsumi Electric Co Ltd | Speed control circuit for compact dc motor |
| JPH0241276B2 (en) * | 1981-07-09 | 1990-09-17 | ||
| JPH02133087A (en) * | 1988-11-10 | 1990-05-22 | Nec Corp | Motor speed control circuit |
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