GB2031237B - Electrical circuitry for feeding an a.c. motor - Google Patents

Electrical circuitry for feeding an a.c. motor

Info

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
Application number
GB7930281A
Other versions
GB2031237A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SATCHWELL BIRKA
Original Assignee
SATCHWELL BIRKA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SATCHWELL BIRKA filed Critical SATCHWELL BIRKA
Publication of GB2031237A publication Critical patent/GB2031237A/en
Application granted granted Critical
Publication of GB2031237B publication Critical patent/GB2031237B/en
Expired legal-status Critical Current

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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Fluid-Damping Devices (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (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>
GB7930281A 1978-09-02 1979-08-31 Electrical circuitry for feeding an a.c. motor Expired GB2031237B (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2435151A1 (en) 1980-03-28
NL7906545A (en) 1980-03-04
CH635221GA3 (en) 1983-03-31
GB2031237A (en) 1980-04-16
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