JPS54153473A - Controller for lifting magnet apparatus - Google Patents
Controller for lifting magnet apparatusInfo
- Publication number
- JPS54153473A JPS54153473A JP6094978A JP6094978A JPS54153473A JP S54153473 A JPS54153473 A JP S54153473A JP 6094978 A JP6094978 A JP 6094978A JP 6094978 A JP6094978 A JP 6094978A JP S54153473 A JPS54153473 A JP S54153473A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- voltage
- battery
- magnet
- contactor
- 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.)
- Granted
Links
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
PURPOSE: To reduce the number of parts of a lifting magnet apparatus equipped with a battery as an emergency power source and make the apparatus compact, by enabling the use of a DC power source not only for energizing a magnet but also for charging the battery.
CONSTITUTION: When the magnet 8 is energized, an a-contact 7a of a forwardly energizing contactor is closed to form a main circuit and an auxiliary a-contact 7a' of the contactor is closed for an automatic pulse phase shifter 5. At that time, the voltage of a constant voltage source 6 is selectively changed by a controller 6' and supplied as an instruction voltage to alter an output DC voltage, and the battery 13 is not chaged because a b-contact 7b of the contactor is open. When the magnet is de-energized, the a-contact 7a is opened and the b-contact 7b is closed to form a charging circuit. At the same time, a prescribed instruction voltage is obtained from the constant voltage source 6 through a resistor 6" to produce an output DC voltage to charge the battery.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6094978A JPS54153473A (en) | 1978-05-24 | 1978-05-24 | Controller for lifting magnet apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6094978A JPS54153473A (en) | 1978-05-24 | 1978-05-24 | Controller for lifting magnet apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54153473A true JPS54153473A (en) | 1979-12-03 |
JPS5546355B2 JPS5546355B2 (en) | 1980-11-22 |
Family
ID=13157144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6094978A Granted JPS54153473A (en) | 1978-05-24 | 1978-05-24 | Controller for lifting magnet apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54153473A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101288978B1 (en) * | 2011-06-09 | 2013-07-23 | 동아대학교 산학협력단 | Non-Contacting Magnetic Lifter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0716270B2 (en) * | 1988-11-10 | 1995-02-22 | ソニー株式会社 | Audio signal playback device |
-
1978
- 1978-05-24 JP JP6094978A patent/JPS54153473A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101288978B1 (en) * | 2011-06-09 | 2013-07-23 | 동아대학교 산학협력단 | Non-Contacting Magnetic Lifter |
Also Published As
Publication number | Publication date |
---|---|
JPS5546355B2 (en) | 1980-11-22 |
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