GB859933A - Improvements in or relating to signal controlled motor servo systems - Google Patents
Improvements in or relating to signal controlled motor servo systemsInfo
- Publication number
- GB859933A GB859933A GB22682/58A GB2268258A GB859933A GB 859933 A GB859933 A GB 859933A GB 22682/58 A GB22682/58 A GB 22682/58A GB 2268258 A GB2268258 A GB 2268258A GB 859933 A GB859933 A GB 859933A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistors
- collectors
- terminal
- relating
- rectifiers
- 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
- 238000004804 winding Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 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
- H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
- H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
859,933. Control of A.C. motors. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. April 9, 1959 [July 15, 1958], No. 22682/58. Class 38 (3). A control winding 3 for a two-phase servomotor is supplied from a source 5 of signal voltage through a two-stage, push-pull amplifier comprising transistors 6, 7, coupled through a transformer 8 with transistors 11, 12. Coupling between the motor windings 2, 3, when the motor is running may produce voltage "spikes" at the bases of the transistors 11, 12, and at the collectors of the transistors 6, 7. In order to prevent this, rectifiers 14, 15 are connected between a positive terminal 9 and the collectors of transistors 11 and 12 respectively. If either of these collectors becomes positive with respect to the terminal 9, the appropriate rectifier conducts and prevents rise of potential of the collector in question. As shown, the transistors are of the PNP type. If they are of the NPN type, the terminal 9 has negative polarity and the rectifiers are reversed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22682/58A GB859933A (en) | 1958-07-15 | 1958-07-15 | Improvements in or relating to signal controlled motor servo systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB22682/58A GB859933A (en) | 1958-07-15 | 1958-07-15 | Improvements in or relating to signal controlled motor servo systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB859933A true GB859933A (en) | 1961-01-25 |
Family
ID=10183409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22682/58A Expired GB859933A (en) | 1958-07-15 | 1958-07-15 | Improvements in or relating to signal controlled motor servo systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB859933A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122434A (en) * | 1982-05-28 | 1984-01-11 | Michael John Flowerday | Electric motor control |
-
1958
- 1958-07-15 GB GB22682/58A patent/GB859933A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2122434A (en) * | 1982-05-28 | 1984-01-11 | Michael John Flowerday | Electric motor control |
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