JPS5645005A - Electromagnetic device - Google Patents

Electromagnetic device

Info

Publication number
JPS5645005A
JPS5645005A JP12105979A JP12105979A JPS5645005A JP S5645005 A JPS5645005 A JP S5645005A JP 12105979 A JP12105979 A JP 12105979A JP 12105979 A JP12105979 A JP 12105979A JP S5645005 A JPS5645005 A JP S5645005A
Authority
JP
Japan
Prior art keywords
electromagnetic device
attracted
plunger
resistor
constitution
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
Application number
JP12105979A
Other languages
Japanese (ja)
Inventor
Katsuhiko Etsuno
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12105979A priority Critical patent/JPS5645005A/en
Publication of JPS5645005A publication Critical patent/JPS5645005A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/10—Manually-operated control; Solenoid-operated control
    • G11B15/103—Manually-operated control; Solenoid-operated control electrically operated
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F7/1805—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current
    • H01F7/1838—Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current by switching-in or -out impedance

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Recording Measured Values (AREA)

Abstract

PURPOSE:To simplify the constitution and to reduce the watt consumption and heating value of an electromagnetic device for a plunger and the like used to control a tape recorder and the like by inserting a resistor in the exciting winding circuit to maintain the state of a movable piece having been attracted. CONSTITUTION:To maintain the state of a movable piece, e.g., a plunger 8 having been attracted by excitation of windings 6 and 7, switches 9 and 10 are changed over to the fixed terminal side. This causes a resistor 11 to be inserted in the exciting winding circuit. Thus, the watt consumption and the heating value on the whole can be reduced.
JP12105979A 1979-09-20 1979-09-20 Electromagnetic device Pending JPS5645005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12105979A JPS5645005A (en) 1979-09-20 1979-09-20 Electromagnetic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12105979A JPS5645005A (en) 1979-09-20 1979-09-20 Electromagnetic device

Publications (1)

Publication Number Publication Date
JPS5645005A true JPS5645005A (en) 1981-04-24

Family

ID=14801813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12105979A Pending JPS5645005A (en) 1979-09-20 1979-09-20 Electromagnetic device

Country Status (1)

Country Link
JP (1) JPS5645005A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784244A (en) * 1996-09-13 1998-07-21 Cooper Industries, Inc. Current limiting circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5784244A (en) * 1996-09-13 1998-07-21 Cooper Industries, Inc. Current limiting circuit

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