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JPS57125852A - Ammeter - Google Patents

Ammeter

Info

Publication number
JPS57125852A
JPS57125852A JP1268281A JP1268281A JPS57125852A JP S57125852 A JPS57125852 A JP S57125852A JP 1268281 A JP1268281 A JP 1268281A JP 1268281 A JP1268281 A JP 1268281A JP S57125852 A JPS57125852 A JP S57125852A
Authority
JP
Japan
Prior art keywords
magnetic field
current
magnet
rotor magnet
scale
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
JP1268281A
Other languages
Japanese (ja)
Other versions
JPS6256466B2 (en
Inventor
Hiroshi Iiyama
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.)
Jeco Corp
Original Assignee
Jeco Corp
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 Jeco Corp filed Critical Jeco Corp
Priority to JP1268281A priority Critical patent/JPS57125852A/en
Publication of JPS57125852A publication Critical patent/JPS57125852A/en
Publication of JPS6256466B2 publication Critical patent/JPS6256466B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
    • G01R5/14—Moving-iron instruments
    • G01R5/16—Moving-iron instruments with pivoting magnet

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE:To make possible the arbitrary changing of the oscillation angle characteristics with respect to current by specifying the magnetization characteristic of a rotor magnet in forming the same. CONSTITUTION:When a magnetization head 18 formed to have a leading end of a projecting shape is magnetized so as to assume S pole and a magnetization head 19 so as to assume N pole, a rotor magnet 4 consisting of Ba ferrite is magnetized, the relation phi=(ksin<2>alpha+1)cospsi is obtained between the angle of circumference alpha and magnetic flux quantity phi of the magnet 4. If such rotor magnet 4 is fixed freely turnably to a shaft 3, and DC current is flowed to a coil 9, the magnetic field wherein the magnetic field generated by this current and the magnetic field by side magnets 7, 9 are combined is generated. Attracted by this combined magnetic field, the magnet 4 turns at the angle corresponding to said current value, and a pointer 5 indicates the scale of the current value. Thereby, the formation of a linear scale or a partly magnified scale is made easy.
JP1268281A 1981-01-30 1981-01-30 Ammeter Granted JPS57125852A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1268281A JPS57125852A (en) 1981-01-30 1981-01-30 Ammeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1268281A JPS57125852A (en) 1981-01-30 1981-01-30 Ammeter

Publications (2)

Publication Number Publication Date
JPS57125852A true JPS57125852A (en) 1982-08-05
JPS6256466B2 JPS6256466B2 (en) 1987-11-26

Family

ID=11812140

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1268281A Granted JPS57125852A (en) 1981-01-30 1981-01-30 Ammeter

Country Status (1)

Country Link
JP (1) JPS57125852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100371719C (en) * 2004-12-24 2008-02-27 秦永仁 Moving iron (electromagnetism system) type AC ammeter, voltmeter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0364857U (en) * 1989-10-30 1991-06-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100371719C (en) * 2004-12-24 2008-02-27 秦永仁 Moving iron (electromagnetism system) type AC ammeter, voltmeter

Also Published As

Publication number Publication date
JPS6256466B2 (en) 1987-11-26

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