GB889346A - Improvements in or relating to methods of and circuit arrangements for operating alternating current motors - Google Patents

Improvements in or relating to methods of and circuit arrangements for operating alternating current motors

Info

Publication number
GB889346A
GB889346A GB30058/58A GB3005858A GB889346A GB 889346 A GB889346 A GB 889346A GB 30058/58 A GB30058/58 A GB 30058/58A GB 3005858 A GB3005858 A GB 3005858A GB 889346 A GB889346 A GB 889346A
Authority
GB
United Kingdom
Prior art keywords
relating
methods
alternating current
circuit arrangements
current motors
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
GB30058/58A
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.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic GmbH
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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of GB889346A publication Critical patent/GB889346A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/04—Asynchronous induction motors for single phase current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

889,346. Control of A.C. motors. ELECTROACUSTIC G.m.b.H. Sept. 19, 1958 [Sept. 19, 1957], No. 30058/58. Class 38 (3). The field winding 2 of an A.C. motor forms the oscillator coil of a transistor arrangement for converting D.C. into A.C. The oscillatory circuit also comprises transistor 4, feedback coil 3, capacitor 8 and resistors 5, 6, and is energized by a battery 7. The speed of the motor may be determined by varying one or more of the frequency-controlling components of the oscillatory circuit. In a modification, the field winding of the motor is divided and the oscillator comprises two transistors connected in push-pull to the two ends and the centre-point of the winding. The feedback winding is also in two parts, Fig. 2 (not shown).
GB30058/58A 1957-09-19 1958-09-19 Improvements in or relating to methods of and circuit arrangements for operating alternating current motors Expired GB889346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE889346X 1957-09-19

Publications (1)

Publication Number Publication Date
GB889346A true GB889346A (en) 1962-02-14

Family

ID=6834506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30058/58A Expired GB889346A (en) 1957-09-19 1958-09-19 Improvements in or relating to methods of and circuit arrangements for operating alternating current motors

Country Status (1)

Country Link
GB (1) GB889346A (en)

Similar Documents

Publication Publication Date Title
GB1068842A (en) Synchronous motors
GB1068843A (en) Synchronous motors
GB889346A (en) Improvements in or relating to methods of and circuit arrangements for operating alternating current motors
GB804694A (en) Improvements in or relating to electromechanical oscillators
GB1093538A (en) Improvements in or relating to switched frequency oscillators
GB1246820A (en) Power supply for a stepping motor
GB1196823A (en) Electrical Generator for Energizing a Source of Ultrasonic Energy.
SU541265A1 (en) Square pulse generator
GB1240070A (en) Electronic circuit for driving a mechanical oscillating system
SU417884A1 (en)
GB798997A (en) Improvements in and relating to oscillation generators employing transistors
SU134745A1 (en) AC drive
SU632086A1 (en) Switching apparatus
GB598285A (en) Improvements in or relating to magnetic amplifiers
GB1067969A (en) Improvements in or relating to voltage-controlled oscillators
SU585606A2 (en) Contactless track switch
SU425325A1 (en) TARGETED GENERATOR
FR2236331A1 (en) Speed regulation of electro-mechanical transducers - dynamically annuls apparent resistance by introducing resistance
JPS5238872A (en) Solid state relay circuit
GB1130672A (en) Electric timepiece
GB901076A (en) Improvements in static inverter system
GB828705A (en) Improvements relating to electronic power supply for clock and other small electric motors
JPS54104534A (en) Inverter circuit
JPS56153983A (en) Transistor inverter
FR1435615A (en) Circuit for electric clockwork