GB2031237B - Electrical circuitry for feeding an a.c. motor - Google Patents
Electrical circuitry for feeding an a.c. motorInfo
- Publication number
- GB2031237B GB2031237B GB7930281A GB7930281A GB2031237B GB 2031237 B GB2031237 B GB 2031237B GB 7930281 A GB7930281 A GB 7930281A GB 7930281 A GB7930281 A GB 7930281A GB 2031237 B GB2031237 B GB 2031237B
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- volts
- supply voltage
- feeding
- ptc
- 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
- H02P4/00—Arrangements specially adapted for regulating or controlling the speed or torque of electric motors that can be connected to two or more different electric power supplies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Motor And Converter Starters (AREA)
- Control Of Electric Motors In General (AREA)
- Fluid-Damping Devices (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The present invention relates to electric circuitry for applying different supply voltages to a synchronous a.c. motor 5 for driving a clock. The voltages are applied via a series resistor, which consists of a PTC resistor 10 that is bridged by a capacitor 9. In that circuitry, a motor is used that is designed for a supply voltage of or below 24 volts. If the supply voltage is low (24 volts), the PTC resistor will have a low resistance and for this reason exerts no influence. If the supply voltage is high (220 volts), the PTC voltage will have a high resistance so that the motor current is mainly controlled by the capacitor. Zener diodes 11 may be connected across the motor. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE7826384 | 1978-09-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2031237A GB2031237A (en) | 1980-04-16 |
GB2031237B true GB2031237B (en) | 1983-01-19 |
Family
ID=6694822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7930281A Expired GB2031237B (en) | 1978-09-02 | 1979-08-31 | Electrical circuitry for feeding an a.c. motor |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH635221B (en) |
FR (1) | FR2435151A1 (en) |
GB (1) | GB2031237B (en) |
NL (1) | NL7906545A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3010629C2 (en) * | 1980-03-20 | 1983-01-05 | Satchwell Birka Regelungstechnik Gmbh, 5630 Remscheid | Arrangement for operating a synchronous motor fed with AC voltage |
-
1979
- 1979-08-31 NL NL7906545A patent/NL7906545A/en not_active Application Discontinuation
- 1979-08-31 CH CH790079A patent/CH635221B/en unknown
- 1979-08-31 GB GB7930281A patent/GB2031237B/en not_active Expired
- 1979-09-03 FR FR7922150A patent/FR2435151A1/en active Granted
Also Published As
Publication number | Publication date |
---|---|
GB2031237A (en) | 1980-04-16 |
FR2435151A1 (en) | 1980-03-28 |
CH635221GA3 (en) | 1983-03-31 |
NL7906545A (en) | 1980-03-04 |
FR2435151B1 (en) | 1984-09-07 |
CH635221B (en) |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |