JPS54153473A - Controller for lifting magnet apparatus - Google Patents

Controller for lifting magnet apparatus

Info

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
Application number
JP6094978A
Other languages
Japanese (ja)
Other versions
JPS5546355B2 (en
Inventor
Tadashi Wachi
Masaru Aoshima
Takashi Kadowaki
Akiyoshi Sotodate
Reiji Takeuchi
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.)
Hitachi Ltd
Hitachi Omika Denki KK
Original Assignee
Hitachi Ltd
Hitachi Omika Denki KK
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 Hitachi Ltd, Hitachi Omika Denki KK filed Critical Hitachi Ltd
Priority to JP6094978A priority Critical patent/JPS54153473A/en
Publication of JPS54153473A publication Critical patent/JPS54153473A/en
Publication of JPS5546355B2 publication Critical patent/JPS5546355B2/ja
Granted legal-status Critical Current

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
JP6094978A 1978-05-24 1978-05-24 Controller for lifting magnet apparatus Granted JPS54153473A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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