IT973432B - SPEED CONTROL DEVICE FOR DIRECT CURRENT MOTORS - Google Patents
SPEED CONTROL DEVICE FOR DIRECT CURRENT MOTORSInfo
- Publication number
- IT973432B IT973432B IT53870/72A IT5387072A IT973432B IT 973432 B IT973432 B IT 973432B IT 53870/72 A IT53870/72 A IT 53870/72A IT 5387072 A IT5387072 A IT 5387072A IT 973432 B IT973432 B IT 973432B
- Authority
- IT
- Italy
- Prior art keywords
- control device
- direct current
- speed control
- current motors
- motors
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
- A61G2203/14—Joysticks
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5220271A GB1413476A (en) | 1971-11-10 | 1971-11-10 | Speed control for dc motors |
Publications (1)
Publication Number | Publication Date |
---|---|
IT973432B true IT973432B (en) | 1974-06-10 |
Family
ID=10463018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT53870/72A IT973432B (en) | 1971-11-10 | 1972-11-08 | SPEED CONTROL DEVICE FOR DIRECT CURRENT MOTORS |
Country Status (9)
Country | Link |
---|---|
US (1) | US3854079A (en) |
JP (1) | JPS529806B2 (en) |
CA (1) | CA990782A (en) |
DE (1) | DE2255015C3 (en) |
ES (2) | ES408658A1 (en) |
FR (1) | FR2160163A5 (en) |
GB (1) | GB1413476A (en) |
IT (1) | IT973432B (en) |
ZA (1) | ZA727726B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2617883A1 (en) * | 1976-04-23 | 1977-11-10 | Bosch Gmbh Robert | PULSE CONTROL CIRCUIT FOR ELECTRIC CONSUMERS |
US4233549A (en) * | 1978-12-08 | 1980-11-11 | Baxter Travenol Laboratories, Inc. | Speed and torque control for fractional horsepower motors |
US4325011A (en) * | 1980-01-31 | 1982-04-13 | Peterson Donovan F | Pulse width modulation control circuit |
EP0076039A1 (en) * | 1981-08-31 | 1983-04-06 | Capax Electrische Apparatenfabriek B.V. | Speed control for power tools having a DC motor |
US5526460A (en) * | 1994-04-25 | 1996-06-11 | Black & Decker Inc. | Impact wrench having speed control circuit |
GB0128844D0 (en) * | 2001-12-01 | 2002-01-23 | Westland Helicopters | Power control device |
WO2020151006A1 (en) * | 2019-01-25 | 2020-07-30 | 深圳和而泰智能控制股份有限公司 | Rotational speed control device for motor, motor, and food processing apparatus |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1341960A (en) * | 1961-12-29 | 1963-11-02 | Philips Nv | Astable multivibrator |
GB1196244A (en) * | 1966-07-26 | 1970-06-24 | Cableform Ltd | Improvements relating to Electrically Propelled Invalid Carriages |
BE696125A (en) * | 1967-03-24 | 1967-09-24 | ||
US3617845A (en) * | 1970-04-27 | 1971-11-02 | Applied Motors Inc | Energy-conserving control circuit using power transistors |
JPS5141248B1 (en) * | 1970-12-26 | 1976-11-09 |
-
1971
- 1971-11-10 GB GB5220271A patent/GB1413476A/en not_active Expired
-
1972
- 1972-10-31 CA CA155,270A patent/CA990782A/en not_active Expired
- 1972-10-31 ZA ZA727726A patent/ZA727726B/en unknown
- 1972-11-08 IT IT53870/72A patent/IT973432B/en active
- 1972-11-08 ES ES408658A patent/ES408658A1/en not_active Expired
- 1972-11-10 JP JP47112193A patent/JPS529806B2/ja not_active Expired
- 1972-11-10 US US00305507A patent/US3854079A/en not_active Expired - Lifetime
- 1972-11-10 DE DE2255015A patent/DE2255015C3/en not_active Expired
- 1972-11-10 FR FR7239887A patent/FR2160163A5/fr not_active Expired
-
1975
- 1975-03-24 ES ES435937A patent/ES435937A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS529806B2 (en) | 1977-03-18 |
DE2255015B2 (en) | 1979-01-25 |
GB1413476A (en) | 1975-11-12 |
JPS4858330A (en) | 1973-08-16 |
CA990782A (en) | 1976-06-08 |
FR2160163A5 (en) | 1973-06-22 |
US3854079A (en) | 1974-12-10 |
DE2255015A1 (en) | 1973-05-17 |
ES408658A1 (en) | 1976-03-01 |
ES435937A1 (en) | 1976-12-16 |
ZA727726B (en) | 1973-06-27 |
DE2255015C3 (en) | 1979-09-13 |
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