GB1398437A - Moving coil instruments - Google Patents

Moving coil instruments

Info

Publication number
GB1398437A
GB1398437A GB3220772A GB3220772A GB1398437A GB 1398437 A GB1398437 A GB 1398437A GB 3220772 A GB3220772 A GB 3220772A GB 3220772 A GB3220772 A GB 3220772A GB 1398437 A GB1398437 A GB 1398437A
Authority
GB
United Kingdom
Prior art keywords
moving coil
moving
july
plates
displacement
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
GB3220772A
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.)
Elster Metering Holdings Ltd
KENT Ltd GEORGE
Original Assignee
George Kent Ltd
KENT Ltd GEORGE
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 George Kent Ltd, KENT Ltd GEORGE filed Critical George Kent Ltd
Priority to GB3220772A priority Critical patent/GB1398437A/en
Priority to DE19732335109 priority patent/DE2335109A1/en
Priority to JP7716573A priority patent/JPS4945777A/en
Publication of GB1398437A publication Critical patent/GB1398437A/en
Expired 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
    • G01R5/02—Moving-coil instruments
    • G01R5/04—Moving-coil instruments with magnet external to the coil

Landscapes

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

Abstract

1398437 Measuring angular displacements; moving coil instruments GEORGE KENT Ltd 9 July 1973 [10 July 1972] 32207/72 Headings G1N and G1Q The angular displacement of the rotor of a moving coil meter is determined by a differential capacitor whose moving electrode is the metal bobbin 15 (Fig.3) on which the moving coil is wound and whose fixed electrodes are partcylindrical plates 16-19 attached to the cylindrical faces of the magnet poles 12, 13 through an insulating layer 20, the pairs of plates 16, 17 and 18, 19 being separated by diagonal slits to produce a differential action with displacement of the moving electrode 15. The central cylindrical magnetic member 14 is fed with A.C., and the current to each pair of opposing electrodes 16, 19 and 17, 18 is sensed by a transistor 22, 23 respectively, the difference being indicative of the angular displacement.
GB3220772A 1972-07-10 1972-07-10 Moving coil instruments Expired GB1398437A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3220772A GB1398437A (en) 1972-07-10 1972-07-10 Moving coil instruments
DE19732335109 DE2335109A1 (en) 1972-07-10 1973-07-10 IMPROVEMENTS IN REEL INSTRUMENTS
JP7716573A JPS4945777A (en) 1972-07-10 1973-07-10 KADOKOIRUSOCHI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3220772A GB1398437A (en) 1972-07-10 1972-07-10 Moving coil instruments

Publications (1)

Publication Number Publication Date
GB1398437A true GB1398437A (en) 1975-06-18

Family

ID=10334971

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3220772A Expired GB1398437A (en) 1972-07-10 1972-07-10 Moving coil instruments

Country Status (3)

Country Link
JP (1) JPS4945777A (en)
DE (1) DE2335109A1 (en)
GB (1) GB1398437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346818B2 (en) 1998-07-22 2002-02-12 British Aerospace Plc Capacitance position transducer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3008960C2 (en) * 1980-03-08 1983-08-18 Vereinigte Glaswerke Gmbh, 5100 Aachen Cooling device for a float glass plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6346818B2 (en) 1998-07-22 2002-02-12 British Aerospace Plc Capacitance position transducer

Also Published As

Publication number Publication date
JPS4945777A (en) 1974-05-01
DE2335109A1 (en) 1974-01-24

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees