JPS648898A - Step motor drive circuit - Google Patents

Step motor drive circuit

Info

Publication number
JPS648898A
JPS648898A JP16303187A JP16303187A JPS648898A JP S648898 A JPS648898 A JP S648898A JP 16303187 A JP16303187 A JP 16303187A JP 16303187 A JP16303187 A JP 16303187A JP S648898 A JPS648898 A JP S648898A
Authority
JP
Japan
Prior art keywords
reference voltage
exciting
gradually
drive circuit
motor drive
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
JP16303187A
Other languages
Japanese (ja)
Inventor
Kuniaki Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP16303187A priority Critical patent/JPS648898A/en
Publication of JPS648898A publication Critical patent/JPS648898A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Stepping Motors (AREA)

Abstract

PURPOSE:To prevent loud noise during stepping operation, by controlling current through a reference signal which increases gradually when rising and attenuates gradually when falling. CONSTITUTION:Voltage induced across a resistor 25 for detecting current flowing through an exciting coil A or C is compared with a reference voltage V'ref produced from a reference voltage generator 41. ON/OFF operation of a transistor 34 for feeding exciting current I11 is controlled corresponding to comparison result. The reference voltage generator 41 generates the reference voltage V'ref which increases gradually to a high level when exciting timing rises and attenuates gradually to a low level when the exciting timing falls.
JP16303187A 1987-06-30 1987-06-30 Step motor drive circuit Pending JPS648898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16303187A JPS648898A (en) 1987-06-30 1987-06-30 Step motor drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16303187A JPS648898A (en) 1987-06-30 1987-06-30 Step motor drive circuit

Publications (1)

Publication Number Publication Date
JPS648898A true JPS648898A (en) 1989-01-12

Family

ID=15765872

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16303187A Pending JPS648898A (en) 1987-06-30 1987-06-30 Step motor drive circuit

Country Status (1)

Country Link
JP (1) JPS648898A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122995A (en) * 1991-10-28 1993-05-18 Sharp Corp Control circuit for stepping motor
JP2002034292A (en) * 2000-07-17 2002-01-31 Rohm Co Ltd Motor driver
DE112016005379B4 (en) 2015-11-24 2021-11-04 Autonetworks Technologies, Ltd. Shield connector and shielded cable with one connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05122995A (en) * 1991-10-28 1993-05-18 Sharp Corp Control circuit for stepping motor
JP2002034292A (en) * 2000-07-17 2002-01-31 Rohm Co Ltd Motor driver
DE112016005379B4 (en) 2015-11-24 2021-11-04 Autonetworks Technologies, Ltd. Shield connector and shielded cable with one connector

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