GB1422236A - Speed control circuit - Google Patents
Speed control circuitInfo
- Publication number
- GB1422236A GB1422236A GB869773A GB869773A GB1422236A GB 1422236 A GB1422236 A GB 1422236A GB 869773 A GB869773 A GB 869773A GB 869773 A GB869773 A GB 869773A GB 1422236 A GB1422236 A GB 1422236A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- capacitor
- transistor
- speed
- potential divider
- 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.)
- Expired
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
- H02P7/29—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 pulse modulation
- H02P7/291—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 pulse modulation with on-off control between two set points, e.g. controlling by hysteresis
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
1422236 Automatic control of speed INTERNATIONAL STANDARD ELECTRIC CORP 22 Feb 1973 [25 Feb 1972] 8697/73 Heading G3R A speed-control circuit for a D.C. motor M has a regulating transistor T4 in series with the motor and a complementary transistor arrangement T2, T3 whose conduction is varied by the charge present on capacitor C2 forming part of an input circuit responsive to the output voltage of a tachometer driven by the motor and including a potential divider arrangement feeding a charge controlling transistor whose emitter circuit includes the capacitor C2. In generation the Zener diode Z provides a constant voltage across the potential divider chain P, R2, R3 and the potentiometer P is adjusted as that Tl just does not conduct. As the motor starts the voltage output of the tachogenerator is added to the potential divider chain and Tl conducts to charge capacitor C2 so that control transistor T2 is made more conductive and transistors T3, T4 less conductive until the speed stabilizes at a value determined by the position of the slider of potentiometer P.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2209037A DE2209037A1 (en) | 1972-02-25 | 1972-02-25 | SPEED CONTROL CIRCUIT FOR DC MOTORS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1422236A true GB1422236A (en) | 1976-01-21 |
Family
ID=5837145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB869773A Expired GB1422236A (en) | 1972-02-25 | 1973-02-22 | Speed control circuit |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU5200773A (en) |
| DE (1) | DE2209037A1 (en) |
| GB (1) | GB1422236A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS538888B2 (en) * | 1973-09-10 | 1978-04-01 | ||
| JPS52109513U (en) * | 1976-02-18 | 1977-08-20 | ||
| JPS5927192B2 (en) * | 1976-10-13 | 1984-07-04 | 松下電器産業株式会社 | Electric motor speed control device |
-
1972
- 1972-02-25 DE DE2209037A patent/DE2209037A1/en active Pending
-
1973
- 1973-02-08 AU AU52007/73A patent/AU5200773A/en not_active Expired
- 1973-02-22 GB GB869773A patent/GB1422236A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2209037A1 (en) | 1973-08-30 |
| AU5200773A (en) | 1974-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |