JPS5454213A - Revolving electric machine - Google Patents
Revolving electric machineInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0158279U (en) * | 1987-10-02 | 1989-04-12 |
-
1977
- 1977-10-07 JP JP12118377A patent/JPS5454213A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0158279U (en) * | 1987-10-02 | 1989-04-12 |
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