JPS6488957A - Index position detecting device - Google Patents

Index position detecting device

Info

Publication number
JPS6488957A
JPS6488957A JP24545987A JP24545987A JPS6488957A JP S6488957 A JPS6488957 A JP S6488957A JP 24545987 A JP24545987 A JP 24545987A JP 24545987 A JP24545987 A JP 24545987A JP S6488957 A JPS6488957 A JP S6488957A
Authority
JP
Japan
Prior art keywords
index
detecting
signal
magnet
permanent magnet
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
JP24545987A
Other languages
Japanese (ja)
Inventor
Shoji Nishioka
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 JP24545987A priority Critical patent/JPS6488957A/en
Publication of JPS6488957A publication Critical patent/JPS6488957A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To simplify composition and to improve profitability by providing an index magnetized to opposite magnetism at one part of a permanent magnet for the field system of a rotor, logic-processing the output of the magnetoelectric converting element for detecting the magnetic field of the permanent magnet and generating an index signal. CONSTITUTION:To one of permanent magnets 22 for the field system of a rotor 21, a magnet 23 for detecting the index which is magnetized the part thereof to the opposite magnetism, is provided, and it is detected by an element HG11 in the Hall element of fixed magnetoelectric converting elements for detecting the magnetic field HG11-HG13 for detecting the magnet 22. Triggering is executed by this detecting signal, and a window signal WD is outputted from a monostable multivibrator 31, the detecting signal to pass through an inverter and an AND circuit 33 are AND-processed, and an H signal from the circuit 33 becomes an index position detecting signal. Thus, the exclusive-use Hall element to magnetize the index to the external side of the permanent magnet for the field system and to detect the index can be eliminat ed, the constitution can be simplified, and the profitability of an index detecting device can be increased.
JP24545987A 1987-09-29 1987-09-29 Index position detecting device Pending JPS6488957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24545987A JPS6488957A (en) 1987-09-29 1987-09-29 Index position detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24545987A JPS6488957A (en) 1987-09-29 1987-09-29 Index position detecting device

Publications (1)

Publication Number Publication Date
JPS6488957A true JPS6488957A (en) 1989-04-03

Family

ID=17133976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24545987A Pending JPS6488957A (en) 1987-09-29 1987-09-29 Index position detecting device

Country Status (1)

Country Link
JP (1) JPS6488957A (en)

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