JPS5313123A - Field circuit for dc motor - Google Patents
Field circuit for dc motorInfo
- Publication number
- JPS5313123A JPS5313123A JP8731876A JP8731876A JPS5313123A JP S5313123 A JPS5313123 A JP S5313123A JP 8731876 A JP8731876 A JP 8731876A JP 8731876 A JP8731876 A JP 8731876A JP S5313123 A JPS5313123 A JP S5313123A
- Authority
- JP
- Japan
- Prior art keywords
- field circuit
- motor
- field
- thyristor
- 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
- Control Of Direct Current Motors (AREA)
Abstract
PURPOSE: To reduce power consumption by discharging transient voltage produced in field winding when field circuit is opened during power supply through thyristor.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8731876A JPS5313123A (en) | 1976-07-23 | 1976-07-23 | Field circuit for dc motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8731876A JPS5313123A (en) | 1976-07-23 | 1976-07-23 | Field circuit for dc motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5313123A true JPS5313123A (en) | 1978-02-06 |
Family
ID=13911483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8731876A Pending JPS5313123A (en) | 1976-07-23 | 1976-07-23 | Field circuit for dc motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5313123A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58100238A (en) * | 1981-12-10 | 1983-06-14 | Foster Denki Kk | Optical information reader |
JPS6310339A (en) * | 1986-07-01 | 1988-01-16 | Nec Corp | Optical pickup device |
US4720825A (en) * | 1984-02-06 | 1988-01-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reproducing devices having improved trick play capability |
US5303216A (en) * | 1991-08-28 | 1994-04-12 | Mitsubishi Denki Kabushiki Kaisha | Optical recording and reproducing apparatus for tracking wobbling guide grooves |
EP0686968A2 (en) | 1994-06-07 | 1995-12-13 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, optical information recording method, and optical information reproducing apparatus |
US5508992A (en) * | 1993-09-29 | 1996-04-16 | Tdk Corporation | Magneto-optical recording/reproducing pickup head with a diffraction grating and a wollaston prism |
-
1976
- 1976-07-23 JP JP8731876A patent/JPS5313123A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58100238A (en) * | 1981-12-10 | 1983-06-14 | Foster Denki Kk | Optical information reader |
US4720825A (en) * | 1984-02-06 | 1988-01-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical data reproducing devices having improved trick play capability |
JPS6310339A (en) * | 1986-07-01 | 1988-01-16 | Nec Corp | Optical pickup device |
JPH0610884B2 (en) * | 1986-07-01 | 1994-02-09 | 日本電気株式会社 | Optical pickup device |
US5303216A (en) * | 1991-08-28 | 1994-04-12 | Mitsubishi Denki Kabushiki Kaisha | Optical recording and reproducing apparatus for tracking wobbling guide grooves |
US5383169A (en) * | 1991-08-28 | 1995-01-17 | Mitsubishi Denki Kabushiki Kaisha | Optical recording and reproducing apparatus for tracking wobbling guide grooves |
US5434834A (en) * | 1991-08-28 | 1995-07-18 | Mitsubishi Denki Kabushiki Kaisha | Optical recording and reproducing apparatus for tracking wobbling guide grooves |
US5508992A (en) * | 1993-09-29 | 1996-04-16 | Tdk Corporation | Magneto-optical recording/reproducing pickup head with a diffraction grating and a wollaston prism |
USRE38648E1 (en) * | 1993-09-29 | 2004-11-09 | Tdk Corporation | Magneto-optical recording/reproducing pickup head with a diffraction grating and a wollaston prism |
EP0686968A2 (en) | 1994-06-07 | 1995-12-13 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, optical information recording method, and optical information reproducing apparatus |
US5790487A (en) * | 1994-06-07 | 1998-08-04 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, optical information recording method, and optical information reproducing apparatus utilizing the same |
US5850379A (en) * | 1994-06-07 | 1998-12-15 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, optical information recording method, and optical information reproducing apparatus utilizing the same |
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