JPS56153991A - Controlling circuit for contactless motor - Google Patents

Controlling circuit for contactless motor

Info

Publication number
JPS56153991A
JPS56153991A JP12323580A JP12323580A JPS56153991A JP S56153991 A JPS56153991 A JP S56153991A JP 12323580 A JP12323580 A JP 12323580A JP 12323580 A JP12323580 A JP 12323580A JP S56153991 A JPS56153991 A JP S56153991A
Authority
JP
Japan
Prior art keywords
transistor
controlling
driving current
hall element
voltage
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.)
Pending
Application number
JP12323580A
Other languages
Japanese (ja)
Inventor
Takeshi Endo
Yoshihiro Mitsui
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.)
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Epson 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 Seiko Epson Corp, Suwa Seikosha KK, Epson Corp filed Critical Seiko Epson Corp
Priority to JP12323580A priority Critical patent/JPS56153991A/en
Publication of JPS56153991A publication Critical patent/JPS56153991A/en
Pending 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
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators

Abstract

PURPOSE:To provide a contactless motor having high reliability by branching and controlling the input current of a Hall element, amplifying the output voltage of the Hall element and switching it by a transistor, and controlling the bias of the transistor. CONSTITUTION:When the driving current is increased by the rise of a power source voltage or by the increase of a load, the voltage drop of a motor driving current detecting resistor 49 will increase and the voltage between the base and the emitter of a controlling transistor 46 will rise. Accordingly, the transistor 46 is conducted, the input current of the Hall element 41 is branched, and consequently the input current will become small, and the Hall output voltage will become low. Therefore, it becomes a driving current limiting circuit to the set resistance value of the resistor 49. Further, the bias potentials of the transistors 42, 43 are also controlled. When the driving current is limited, the locking of a rotor can be prevented, and the burnout and damage of the driving coil and the transistors can be prevented.
JP12323580A 1980-09-05 1980-09-05 Controlling circuit for contactless motor Pending JPS56153991A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12323580A JPS56153991A (en) 1980-09-05 1980-09-05 Controlling circuit for contactless motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12323580A JPS56153991A (en) 1980-09-05 1980-09-05 Controlling circuit for contactless motor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48009869A Division JPS4997211A (en) 1973-01-25 1973-01-25

Publications (1)

Publication Number Publication Date
JPS56153991A true JPS56153991A (en) 1981-11-28

Family

ID=14855541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12323580A Pending JPS56153991A (en) 1980-09-05 1980-09-05 Controlling circuit for contactless motor

Country Status (1)

Country Link
JP (1) JPS56153991A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015142468A (en) * 2014-01-30 2015-08-03 パナソニックＩｐマネジメント株式会社 brushless DC motor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4422578Y1 (en) * 1966-01-31 1969-09-24
US3518517A (en) * 1966-08-12 1970-06-30 Siemens Ag Method and apparatus for continuous reversal of brushless dc motors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4422578Y1 (en) * 1966-01-31 1969-09-24
US3518517A (en) * 1966-08-12 1970-06-30 Siemens Ag Method and apparatus for continuous reversal of brushless dc motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015142468A (en) * 2014-01-30 2015-08-03 パナソニックＩｐマネジメント株式会社 brushless DC motor

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