JPS5691405A - Demagnetizing device for high magnetic field pusle - Google Patents

Demagnetizing device for high magnetic field pusle

Info

Publication number
JPS5691405A
JPS5691405A JP16820579A JP16820579A JPS5691405A JP S5691405 A JPS5691405 A JP S5691405A JP 16820579 A JP16820579 A JP 16820579A JP 16820579 A JP16820579 A JP 16820579A JP S5691405 A JPS5691405 A JP S5691405A
Authority
JP
Japan
Prior art keywords
magnet
coil
capacitor
power source
demagnetized
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
JP16820579A
Other languages
Japanese (ja)
Inventor
Hideyo Suzuki
Yukio Nishigaki
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.)
Denshijiki Industry Co Ltd
Original Assignee
Denshijiki Industry 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 Denshijiki Industry Co Ltd filed Critical Denshijiki Industry Co Ltd
Priority to JP16820579A priority Critical patent/JPS5691405A/en
Publication of JPS5691405A publication Critical patent/JPS5691405A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/003—Methods and devices for magnetising permanent magnets

Abstract

PURPOSE:To permit the demagnetization of a magnet with high coercive force by feeding a coil high current pulses adjusted the level in accordance with the residual magnetism of a magnet wherein the magnet arranged at the center of the coil is demagnetized. CONSTITUTION:A high-voltage D.C. power source section 1 is permitted voltage adjustment in accordance with the characteristics of a demagnetized substance. The charging direction of a capacitor 3 is inverted by changing the connection of the capacitor 3 and the power source 1 by switching a change-over switch 2. Meanwhile, a magnet 9 with high coercive force such as an SmCo5 magnet or the like is placed at the center of an air core coil 6 wound hundreds of winding. And direct current from the power source 1 is supplied to the capacitor 3 through the switch 2 to feed the coil 6 high-voltage pulses by turning off one of the thyristors 4a, 4b after charging the capacitor 3. Next, the output in the power source 1 is reduced in the same way to feed the pulses to the coil 6 in a reverse poloarity and the magnet 9 is demagnetized.
JP16820579A 1979-12-26 1979-12-26 Demagnetizing device for high magnetic field pusle Pending JPS5691405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16820579A JPS5691405A (en) 1979-12-26 1979-12-26 Demagnetizing device for high magnetic field pusle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16820579A JPS5691405A (en) 1979-12-26 1979-12-26 Demagnetizing device for high magnetic field pusle

Publications (1)

Publication Number Publication Date
JPS5691405A true JPS5691405A (en) 1981-07-24

Family

ID=15863729

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16820579A Pending JPS5691405A (en) 1979-12-26 1979-12-26 Demagnetizing device for high magnetic field pusle

Country Status (1)

Country Link
JP (1) JPS5691405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435919A (en) * 1990-05-31 1992-02-06 Seikosha Co Ltd Demagnetizing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0435919A (en) * 1990-05-31 1992-02-06 Seikosha Co Ltd Demagnetizing device

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