GB989818A - Improvements relating to electric motor starter circuit - Google Patents
Improvements relating to electric motor starter circuitInfo
- Publication number
- GB989818A GB989818A GB3619462A GB3619462A GB989818A GB 989818 A GB989818 A GB 989818A GB 3619462 A GB3619462 A GB 3619462A GB 3619462 A GB3619462 A GB 3619462A GB 989818 A GB989818 A GB 989818A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- resistor
- sept
- electric motor
- motor
- 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
- 239000007858 starting material Substances 0.000 title 1
- 230000007423 decrease Effects 0.000 abstract 1
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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual DC motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Motor And Converter Starters (AREA)
Abstract
989,818. Control of D.C. motors. GENERAL MOTORS Ltd. Sept. 10, 1963 [Sept. 24, 1962], No. 36194/62. Heading H2J. A starting circuit for a D.C. motor comprises a switching transistor 10 and a control transistor 12 across which is a bias resistor 30. Upon closure of a start switch 24 transistor 10 becomes fully conducting, passing maximum current through motor field 42 and energizing the armature 44 through the resistor 30, transistor 12 being initially partially conductive. As the motor accelerates the voltage drop across resistor 30 decreases, thus bringing the base potential at tap 36 nearer to that at collector 16 and causing the transistor to become increasingly conductive until full speed is reached. A thermal overload switch may be connected in the supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3619462A GB989818A (en) | 1962-09-24 | 1962-09-24 | Improvements relating to electric motor starter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3619462A GB989818A (en) | 1962-09-24 | 1962-09-24 | Improvements relating to electric motor starter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB989818A true GB989818A (en) | 1965-04-22 |
Family
ID=10385829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3619462A Expired GB989818A (en) | 1962-09-24 | 1962-09-24 | Improvements relating to electric motor starter circuit |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB989818A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4394604A (en) | 1978-03-24 | 1983-07-19 | Cii Honeywell Bull | Control apparatus for an electro-mechanical device that generates a back EMF |
-
1962
- 1962-09-24 GB GB3619462A patent/GB989818A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4394604A (en) | 1978-03-24 | 1983-07-19 | Cii Honeywell Bull | Control apparatus for an electro-mechanical device that generates a back EMF |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1008414A (en) | A load controlling circuit | |
| GB1178132A (en) | Electric Limiter Circuit | |
| GB1328112A (en) | Overload protection circuit for power supply circuit | |
| GB1209927A (en) | Control circuit for electronically-switched motors | |
| GB1125310A (en) | Improved electric motor control system | |
| GB989818A (en) | Improvements relating to electric motor starter circuit | |
| GB1138906A (en) | Electric generator systems and regulators therefor | |
| GB1076223A (en) | Brushless electric motors and speed control thereof | |
| GB1361807A (en) | Contactless direct current motor reversing circuit | |
| GB1472275A (en) | Relay circuits | |
| GB1133818A (en) | Convertible power appliance | |
| US3214606A (en) | Retentive memory bistable multivibrator circuit with preferred starting means | |
| GB1214914A (en) | Improvements in or relating to motor-driven miniature apparatus for connection to differing supply voltages | |
| GB1163685A (en) | Apparatus for Controlling the Supply of Electrical Power to a Load such as an Electric Motor. | |
| GB1165507A (en) | An Improved Electric Motor Braking Circuit | |
| SU538481A1 (en) | Device for generating current pulses in inductive load | |
| GB1115588A (en) | Circuit for automatically adjusting a load to different dc supply voltages | |
| GB1022532A (en) | Direct current interrupting arrangement | |
| GB1240089A (en) | Control circuit | |
| ES300240A1 (en) | AN ELECTRICAL FORCE AND CONTROL MECHANISM | |
| GB936303A (en) | Control systems for electric motors | |
| GB1253541A (en) | Electrical supply systems | |
| GB1070576A (en) | Magnetic amplifiers operative with d.c. electric sources | |
| GB1089141A (en) | Improvements in or relating to electric motor control circuits | |
| GB1415254A (en) | Electric control circuit for an electric motor driven compressor |