IT8121811V0 - SPEED CHANGE DEVICE IN ASYNCHRONOUS ELECTRIC MOTORS. - Google Patents
SPEED CHANGE DEVICE IN ASYNCHRONOUS ELECTRIC MOTORS.Info
- Publication number
- IT8121811V0 IT8121811V0 IT8121811U IT2181181U IT8121811V0 IT 8121811 V0 IT8121811 V0 IT 8121811V0 IT 8121811 U IT8121811 U IT 8121811U IT 2181181 U IT2181181 U IT 2181181U IT 8121811 V0 IT8121811 V0 IT 8121811V0
- Authority
- IT
- Italy
- Prior art keywords
- speed change
- electric motors
- change device
- asynchronous electric
- asynchronous
- Prior art date
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
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
- G05D23/1912—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can take more than two discrete values
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
- G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
- Control Of Multiple Motors (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8121811U IT8121811V0 (en) | 1981-05-19 | 1981-05-19 | SPEED CHANGE DEVICE IN ASYNCHRONOUS ELECTRIC MOTORS. |
GB8213909A GB2100476B (en) | 1981-05-19 | 1982-05-13 | Asynchronous motor speed control |
FR8208990A FR2506540A1 (en) | 1981-05-19 | 1982-05-19 | DEVICE FOR VARYING THE SPEED OF ASYNCHRONOUS MOTORS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8121811U IT8121811V0 (en) | 1981-05-19 | 1981-05-19 | SPEED CHANGE DEVICE IN ASYNCHRONOUS ELECTRIC MOTORS. |
Publications (1)
Publication Number | Publication Date |
---|---|
IT8121811V0 true IT8121811V0 (en) | 1981-05-19 |
Family
ID=11187174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT8121811U IT8121811V0 (en) | 1981-05-19 | 1981-05-19 | SPEED CHANGE DEVICE IN ASYNCHRONOUS ELECTRIC MOTORS. |
Country Status (3)
Country | Link |
---|---|
FR (1) | FR2506540A1 (en) |
GB (1) | GB2100476B (en) |
IT (1) | IT8121811V0 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5876318A (en) * | 1981-10-30 | 1983-05-09 | Mitsubishi Heavy Ind Ltd | Control method and device of airflow of air conditioner |
FR2551567B1 (en) * | 1983-09-06 | 1985-12-13 | Electricite De France | TEMPERATURE AND HYGROMETRY CONTROL AND REGULATION INTERFACE |
GB2270579B (en) * | 1992-09-14 | 1996-08-28 | Yu Feng Enterprise Co Ltd | Improved micro-computer operated control device for air-conditioning system |
-
1981
- 1981-05-19 IT IT8121811U patent/IT8121811V0/en unknown
-
1982
- 1982-05-13 GB GB8213909A patent/GB2100476B/en not_active Expired
- 1982-05-19 FR FR8208990A patent/FR2506540A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
GB2100476B (en) | 1985-02-20 |
FR2506540A1 (en) | 1982-11-26 |
FR2506540B3 (en) | 1984-03-30 |
GB2100476A (en) | 1982-12-22 |
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