JPS55111657A - Brushless motor - Google Patents
Brushless motorInfo
- Publication number
- JPS55111657A JPS55111657A JP1737679A JP1737679A JPS55111657A JP S55111657 A JPS55111657 A JP S55111657A JP 1737679 A JP1737679 A JP 1737679A JP 1737679 A JP1737679 A JP 1737679A JP S55111657 A JPS55111657 A JP S55111657A
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- current flows
- collector
- turned
- circuit
- 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
Landscapes
- Brushless Motors (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
PURPOSE: To simplify the motor structure and to ease its construction by detecting the location and speed of the rotation of the rotor magnet by means of a photoelement, which is placed on the same plane, by utilizing the reflection and absorption of light.
CONSTITUTION: When no reflected ray is applied to the phototransistor PTr 13, high voltage is developed at the collector, current flows between the base and the emitter of the transistors Tr22, 23, the transistors 22, 23, 26 of the ones that make up the first driving circuit 101 are turned on, current flows in the stator coils 10a, 10b in the forward direction. When the voltage at the collector of PTr 13 becomes lower, the transistors 22, 23, 26 are turned off, current flows in the coils 10a, 10b in the reverse direction. Operations of the second driven circuit 102 and the stator coils 10c, 10d which are operated by an output signal from the PTr15 are the same as those of said circuit, the rotor magnet continues its rotation in a fixed direction. In this way, the motor structure can be simplified and its construction can be eased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1737679A JPS55111657A (en) | 1979-02-16 | 1979-02-16 | Brushless motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1737679A JPS55111657A (en) | 1979-02-16 | 1979-02-16 | Brushless motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55111657A true JPS55111657A (en) | 1980-08-28 |
Family
ID=11942283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1737679A Pending JPS55111657A (en) | 1979-02-16 | 1979-02-16 | Brushless motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55111657A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63202259A (en) * | 1987-02-13 | 1988-08-22 | Sony Corp | Brushless motor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016019A (en) * | 1973-06-20 | 1975-02-20 |
-
1979
- 1979-02-16 JP JP1737679A patent/JPS55111657A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5016019A (en) * | 1973-06-20 | 1975-02-20 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63202259A (en) * | 1987-02-13 | 1988-08-22 | Sony Corp | Brushless motor |
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