GB1167234A - System for Driving Electric Motors - Google Patents
System for Driving Electric MotorsInfo
- Publication number
- GB1167234A GB1167234A GB2707167A GB2707167A GB1167234A GB 1167234 A GB1167234 A GB 1167234A GB 2707167 A GB2707167 A GB 2707167A GB 2707167 A GB2707167 A GB 2707167A GB 1167234 A GB1167234 A GB 1167234A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- transistor
- stable
- circuit
- conducting
- 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
- H02P7/2913—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 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 Multiple Motors (AREA)
Abstract
1,167,234. Speed control of D.C. motors. AMPEX ELECTRONICS Ltd., and A. M. HEASLETT. 12 June, 1968 [12 June, 1967], No. 27071/67. Heading H2J. [Also in Division G3] Pulses, the repetition rate of which is dependent upon the speed of a motor 10, are arranged to switch off the supply to the motor, the supply being restored a predetermined interval after receipt of each pulse. The motor 10 is fed from an amplifier 40 controlled by a bi-stable circuit which in one state only allows the motor to be energized. The motor drives a tone wheel 11 whose pick-up coil 12 feeds an amplifier 13, the output of which is squared and then differentiated to provide pulses. The latter are applied to a bi-stable circuit, the transistors 19, 22 of which are both normally non-conducting. The arrival of a pulse renders the bi-stable conducting thus applying voltage to a timing circuit 27, 28 in the collector circuit of transistor 22. When the capacitor 27 has charged to a voltage set by potentiometer 23 a transistor 35 is rendered conducting, causing a sharp pulse to appear at the collector of a transistor 33; this is applied to both a transistor 34, which resets the bi-stable, and another transistor 32, which discharges the capacitor 27 ready for the next cycle. The setting of potentiometer 23 determines the running speed of motor 10 which may, for instance, drive a tape transport system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2707167A GB1167234A (en) | 1967-06-12 | 1967-06-12 | System for Driving Electric Motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2707167A GB1167234A (en) | 1967-06-12 | 1967-06-12 | System for Driving Electric Motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1167234A true GB1167234A (en) | 1969-10-15 |
Family
ID=10253695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2707167A Expired GB1167234A (en) | 1967-06-12 | 1967-06-12 | System for Driving Electric Motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1167234A (en) |
-
1967
- 1967-06-12 GB GB2707167A patent/GB1167234A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee | ||
| PCPE | Delete 'patent ceased' from journal |
Free format text: IN JOURNAL 4955,PAGE 553 |
|
| PCPE | Delete 'patent ceased' from journal |
Free format text: IN JOURNAL 4955,PAGE 553 |
|
| PE20 | Patent expired after termination of 20 years |