GB1336313A - Core-magnet type moving coil instrument having linear response characterisitc - Google Patents

Core-magnet type moving coil instrument having linear response characterisitc

Info

Publication number
GB1336313A
GB1336313A GB5419670A GB5419670A GB1336313A GB 1336313 A GB1336313 A GB 1336313A GB 5419670 A GB5419670 A GB 5419670A GB 5419670 A GB5419670 A GB 5419670A GB 1336313 A GB1336313 A GB 1336313A
Authority
GB
United Kingdom
Prior art keywords
magnet
moving coil
coil
characterisitc
core
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.)
Expired
Application number
GB5419670A
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.)
Canon Inc
Canon Electronics Inc
Original Assignee
Canon Inc
Canon Electronics Inc
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 Canon Inc, Canon Electronics Inc filed Critical Canon Inc
Publication of GB1336313A publication Critical patent/GB1336313A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/38—Arrangements for altering the indicating characteristic, e.g. by modifying the air gap

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1336313 Moving coil meter CANON KK and CANON DENSHI KK 13 Nov 1970 [17 Nov 1969] 54196/70 Heading G1Q In a moving coil meter in which the coil rotates in a gap between an inner magnet 21 and an outer annular yoke 23, the surface of the magnet is elliptical over the range of deflection of the coil, so that the meter response is linear. When the magnet is seen in cross section, the elliptical portions of its surface satisfy a polar coordinate equation of the following form: where (r m , α) = coordinates of the magnet periphery at an extremity of the range of deflection of the coil; the polar coordinate origin being at the centre of the magnet and # = 0‹ being the direction of magnetization. The magnet is of sintered barium ferrite.
GB5419670A 1969-11-17 1970-11-13 Core-magnet type moving coil instrument having linear response characterisitc Expired GB1336313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9194769 1969-11-17

Publications (1)

Publication Number Publication Date
GB1336313A true GB1336313A (en) 1973-11-07

Family

ID=14040765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5419670A Expired GB1336313A (en) 1969-11-17 1970-11-13 Core-magnet type moving coil instrument having linear response characterisitc

Country Status (3)

Country Link
US (1) US3711776A (en)
DE (1) DE2056323A1 (en)
GB (1) GB1336313A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52117674A (en) * 1976-03-29 1977-10-03 Yoshizou Adachi Frame used commonly as yoke part of internal magnet moving coil type meter
US20050194967A1 (en) * 2004-03-03 2005-09-08 Arquimedes Godoy Apparatus for sensing angular positions of an object

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005952A (en) * 1958-10-06 1961-10-24 Triplett Electrical Instr Co Electrical instruments and method of adjusting scale characteristics

Also Published As

Publication number Publication date
DE2056323A1 (en) 1971-06-03
US3711776A (en) 1973-01-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years