GB1522085A – Methods of and circuit arrangements for regulating the speed of a dc motor
– Google Patents
GB1522085A – Methods of and circuit arrangements for regulating the speed of a dc motor
– Google Patents
Methods of and circuit arrangements for regulating the speed of a dc motor
Info
Publication number
GB1522085A
GB1522085A
GB8383/76A
GB838376A
GB1522085A
GB 1522085 A
GB1522085 A
GB 1522085A
GB 8383/76 A
GB8383/76 A
GB 8383/76A
GB 838376 A
GB838376 A
GB 838376A
GB 1522085 A
GB1522085 A
GB 1522085A
Authority
GB
United Kingdom
Prior art keywords
motor
speed
transistor
integrator
turned
Prior art date
1975-03-03
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
GB8383/76A
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.)
1975-03-03
Filing date
1976-03-02
Publication date
1978-08-23
1976-03-02
Application filed by ELAC Electroacustic GmbH
filed
Critical
ELAC Electroacustic GmbH
1978-08-23
Publication of GB1522085A
publication
Critical
patent/GB1522085A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
H02P7/291—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation with on-off control between two set points, e.g. controlling by hysteresis
Abstract
1522085 Automatic control of speed ELECTROACUSTIC GmbH 2 March 1976 [3 March 1975] 08383/76 Heading G3R The speed of a D.C. motor is regulated by the comparison of a frequency dependent on motor speed and a reference frequency, the result being integrated to control a switch in the motor supply circuit. The integrator also integrates a fixed D.C. voltage. As shown, control transistor 17 in series with D.C. motor 10 is turned on according to the frequency difference between pulses from reference oscillator 5 and from motor driven disc 11 which are at a frequency proportional to motor speed. For every reference pulse, the output of comparator 1 is blocked whilst transistor 17 is turned on by integrator 16 which integrates the fixed voltage on its non-inverting input. The next pulse from disc 11 raises the output of comparator 1, to turn on transistor 14, thus earthing the integrator output and turning transistor 17 off. The fixed D.C. voltage on the non-inverting integrator input allows transistor 17 to be turned on for starting the motor, even though speed feedback signals are absent.
GB8383/76A
1975-03-03
1976-03-02
Methods of and circuit arrangements for regulating the speed of a dc motor
Expired
GB1522085A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2509172A
DE2509172C3
(en)
1975-03-03
1975-03-03
Method and circuit arrangement for regulating the speed of a DC motor
Publications (1)
Publication Number
Publication Date
GB1522085A
true
GB1522085A
(en)
1978-08-23
Family
ID=5940326
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB8383/76A
Expired
GB1522085A
(en)
1975-03-03
1976-03-02
Methods of and circuit arrangements for regulating the speed of a dc motor
Country Status (4)
Country
Link
JP
(1)
JPS5752796B2
(en)
DE
(1)
DE2509172C3
(en)
GB
(1)
GB1522085A
(en)
NO
(1)
NO139655C
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CN109209978B
(en)
*
2018-12-03
2020-02-07
郑州云海信息技术有限公司
Fan speed regulation circuit and server
1975
1975-03-03
DE
DE2509172A
patent/DE2509172C3/en
not_active
Expired
1975-10-08
NO
NO753406A
patent/NO139655C/en
unknown
1976
1976-02-27
JP
JP51021042A
patent/JPS5752796B2/ja
not_active
Expired
1976-03-02
GB
GB8383/76A
patent/GB1522085A/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2509172A1
(en)
1976-09-09
DE2509172C3
(en)
1978-04-13
NO139655C
(en)
1979-04-18
NO753406L
(en)
1976-09-06
JPS51110619A
(en)
1976-09-30
JPS5752796B2
(en)
1982-11-09
DE2509172B2
(en)
1977-08-18
NO139655B
(en)
1979-01-08
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Legal Events
Date
Code
Title
Description
1979-01-10
PS
Patent sealed [section 19, patents act 1949]
1979-06-20
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1984-11-07
PCNP
Patent ceased through non-payment of renewal fee
