GB1398793A - Circuit arrangement for the speed control of electric motors - Google Patents

Circuit arrangement for the speed control of electric motors

Info

Publication number
GB1398793A
GB1398793A GB5054372A GB5054372A GB1398793A GB 1398793 A GB1398793 A GB 1398793A GB 5054372 A GB5054372 A GB 5054372A GB 5054372 A GB5054372 A GB 5054372A GB 1398793 A GB1398793 A GB 1398793A
Authority
GB
United Kingdom
Prior art keywords
triac
half cycle
transistor
motor
nov
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
GB5054372A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1398793A publication Critical patent/GB1398793A/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
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/10—Commutator motors, e.g. repulsion motors
    • H02P25/14—Universal motors
    • H02P25/145—Universal motors whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value, speed feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

1398793 Automatic control of speed INTERNATIONAL STANDARD ELECTRIC CORP 2 Nov 1972 [2 Nov 1971] 50543/72 Heading G3R [Also in Division H2] An A.C./D.C. series motor M is connected to an A.C. supply through a triac T1 which receives triggering pulses from trigger diode D 1 when capacitor C 1 has charged to the required level. The back e.m.f. generated by the motor when the triac switches off at the end of a half cycle is used to set the conductive state of transistor T2 and thus, by shunting resistor R3, the resistive component of the negative half cycle charging circuit. During a positive half cycle the capacitor is charged through the circuit including R and D3 and the charging current is thus adjustable. The amplitude of the back e.m.f. used to set transistor T2 is proportional to the motor load current at the moment triac T 1 switches off and so the arrangement provides for automatic control of speed. Preferably a field effect transistor is used.
GB5054372A 1971-11-02 1972-11-02 Circuit arrangement for the speed control of electric motors Expired GB1398793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712154454 DE2154454A1 (en) 1971-11-02 1971-11-02 CIRCUIT ARRANGEMENT FOR THE SPEED CONTROL OF ELECTRIC MOTORS

Publications (1)

Publication Number Publication Date
GB1398793A true GB1398793A (en) 1975-06-25

Family

ID=5824002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5054372A Expired GB1398793A (en) 1971-11-02 1972-11-02 Circuit arrangement for the speed control of electric motors

Country Status (2)

Country Link
DE (1) DE2154454A1 (en)
GB (1) GB1398793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047251A1 (en) * 1980-03-05 1982-03-17 THE SCOTT & FETZER COMPANY Simplified power factor controller for induction motor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946930A1 (en) * 1979-11-21 1981-05-27 Düpro AG, Romanshorn DEVICE FOR CLEANING TEXTILE FLOORING
DE3219476A1 (en) * 1982-05-25 1983-12-01 Marquardt Gmbh ADJUSTABLE PHASE CONTROL CIRCUIT FOR ELECTRIC MOTORS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047251A1 (en) * 1980-03-05 1982-03-17 THE SCOTT & FETZER COMPANY Simplified power factor controller for induction motor
EP0047251A4 (en) * 1980-03-05 1982-07-13 Scott & Fetzer Co Simplified power factor controller for induction motor.

Also Published As

Publication number Publication date
DE2154454A1 (en) 1973-05-03

Similar Documents

Publication Publication Date Title
GB1324338A (en) Direct current control circuit
GB972806A (en) Sonic generation
GB1428770A (en) Direct current power control arrangement
GB1030479A (en) A detector of pulses exceeding a predetermined length
GB1398793A (en) Circuit arrangement for the speed control of electric motors
GB1410477A (en) Circuit arrangement for the speed control of single phase series commutator motors
GB1139320A (en) Improvements in or relating to speed-control circuits for commutator motors
GB1179567A (en) Improvements in or relating to Power Controllers
US3771036A (en) Battery powered vehicle traction system
GB1213091A (en) Load responsive power control circuits
GB1091846A (en) Electric motor control circuit
GB1214914A (en) Improvements in or relating to motor-driven miniature apparatus for connection to differing supply voltages
US3560825A (en) Circuit arrangement for establishing an energizing circuit for alternating current induction motors
GB1152811A (en) Power Supply System for D.C. Motors
GB1447778A (en) Speed control circuit for a universal motor
GB1079525A (en) Speed control system for centrifuge motors and the like
GB1113134A (en) An electric motor control circuit
GB1193005A (en) Speed Control Circuit for Single Phase Commutator Electric Motor
GB1107938A (en) Improvements in or relating to laundry machines
GB1146977A (en) Circuit arrangement for controlling the speed of a d.c. commutator motor
GB1279838A (en) Improvements in or relating to control circuits for d.c. electric motors
GB1175096A (en) Improvements in or relating to an Electronic Speed Regulator for Electric Motors
GB1303005A (en)
GB1099424A (en) Speed control circuits for series motors
SU372663A1 (en) PULSE FORMER

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee