JPS5454213A - Revolving electric machine - Google Patents

Revolving electric machine

Info

Publication number
JPS5454213A
JPS5454213A JP12118377A JP12118377A JPS5454213A JP S5454213 A JPS5454213 A JP S5454213A JP 12118377 A JP12118377 A JP 12118377A JP 12118377 A JP12118377 A JP 12118377A JP S5454213 A JPS5454213 A JP S5454213A
Authority
JP
Japan
Prior art keywords
projections
magnetic
motor
signal proportional
pitch
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
JP12118377A
Other languages
Japanese (ja)
Inventor
Akira Tsubouchi
Yoshiaki Igarashi
Isao Yamaguchi
Masaru Onishi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12118377A priority Critical patent/JPS5454213A/en
Publication of JPS5454213A publication Critical patent/JPS5454213A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To produce a frequency signal proportional to the motor rpm by using a permanent magnet of the motor as a magnetic flux source of a frequency generator and using a magnetic rotor constituting a magnetic return path as a rotor section of the generator.
CONSTITUTION: A frequency generator is formed by projections 10 of a magnetic rotor 9 utilizing a field permanent magnet 3 of the motor as a flux source and rectangular wave generation coils 11 formed at the same pitch as the projections on one side of a printed circuit board. Power is generated as variations of magnetic flux produced due to changes of the gaps between adjacent projections 10A and 10B on the magnetic rotor cross the rectangular wave generation coils 11. Voltage due to the projections 10B and voltage due to the projections 10B are added together as same phase voltages by shifting all the projections 10 by one half pitch, whereby a frequency signal proportional to the pitch of the generation coil is produced. In this way, a signal proportional to the motor rpm can be obtained with a simple structure
COPYRIGHT: (C)1979,JPO&Japio
JP12118377A 1977-10-07 1977-10-07 Revolving electric machine Pending JPS5454213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12118377A JPS5454213A (en) 1977-10-07 1977-10-07 Revolving electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12118377A JPS5454213A (en) 1977-10-07 1977-10-07 Revolving electric machine

Publications (1)

Publication Number Publication Date
JPS5454213A true JPS5454213A (en) 1979-04-28

Family

ID=14804897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12118377A Pending JPS5454213A (en) 1977-10-07 1977-10-07 Revolving electric machine

Country Status (1)

Country Link
JP (1) JPS5454213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0158279U (en) * 1987-10-02 1989-04-12

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0158279U (en) * 1987-10-02 1989-04-12

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