GB0412770D0 - A variable differential transformer - Google Patents

A variable differential transformer

Info

Publication number
GB0412770D0
GB0412770D0 GB0412770A GB0412770A GB0412770D0 GB 0412770 D0 GB0412770 D0 GB 0412770D0 GB 0412770 A GB0412770 A GB 0412770A GB 0412770 A GB0412770 A GB 0412770A GB 0412770 D0 GB0412770 D0 GB 0412770D0
Authority
GB
United Kingdom
Prior art keywords
differential transformer
variable differential
variable
transformer
differential
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.)
Withdrawn
Application number
GB0412770A
Other versions
GB2415046A (en
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.)
Sondex Ltd
Original Assignee
Sondex 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 Sondex Ltd filed Critical Sondex Ltd
Priority to GB0412770A priority Critical patent/GB2415046A/en
Publication of GB0412770D0 publication Critical patent/GB0412770D0/en
Priority to PCT/GB2005/002282 priority patent/WO2005121708A1/en
Publication of GB2415046A publication Critical patent/GB2415046A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/22—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils
    • G01D5/2208—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils
    • G01D5/2216—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature differentially influencing two coils by influencing the self-induction of the coils by a movable ferromagnetic element, e.g. a core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F21/00—Variable inductances or transformers of the signal type
    • H01F21/02—Variable inductances or transformers of the signal type continuously variable, e.g. variometers
    • H01F21/06—Variable inductances or transformers of the signal type continuously variable, e.g. variometers by movement of core or part of core relative to the windings as a whole
GB0412770A 2004-06-08 2004-06-08 A variable differential transformer in which the coil voltage is measured at the zero current point Withdrawn GB2415046A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0412770A GB2415046A (en) 2004-06-08 2004-06-08 A variable differential transformer in which the coil voltage is measured at the zero current point
PCT/GB2005/002282 WO2005121708A1 (en) 2004-06-08 2005-06-08 A variable differential transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0412770A GB2415046A (en) 2004-06-08 2004-06-08 A variable differential transformer in which the coil voltage is measured at the zero current point

Publications (2)

Publication Number Publication Date
GB0412770D0 true GB0412770D0 (en) 2004-07-07
GB2415046A GB2415046A (en) 2005-12-14

Family

ID=32696855

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0412770A Withdrawn GB2415046A (en) 2004-06-08 2004-06-08 A variable differential transformer in which the coil voltage is measured at the zero current point

Country Status (2)

Country Link
GB (1) GB2415046A (en)
WO (1) WO2005121708A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10756531B2 (en) 2018-03-29 2020-08-25 Hamilton Sunstrand Corporation Voltage differential transducer (VDT) fault detection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4140998A (en) * 1976-03-15 1979-02-20 Sangamo Weston, Inc. High accuracy position indicator
EP0438103A3 (en) * 1990-01-15 1992-05-06 Dieter Dr. Weiss Process and appliance for measuring physical sizes
GB2271186A (en) * 1992-10-02 1994-04-06 Positek Ltd Circuit for synchronous demodulation of the signal from a variable impedance sensor
JP3248832B2 (en) * 1995-08-31 2002-01-21 三菱電機株式会社 Sensor circuit
DE19538575C2 (en) * 1995-10-17 1998-06-18 Becker Wolf Juergen Univ Prof Inductive proximity sensor
ITBO20010269A1 (en) * 2001-05-07 2002-11-07 Marposs Spa CONDITIONING DEVICE FOR ANALOG TRANSDUCER
US6753686B2 (en) * 2001-05-21 2004-06-22 Mitutoyo Corporation Method and apparatus for detecting failure of differential transformer, and method and apparatus for signal processing of differential transformer

Also Published As

Publication number Publication date
WO2005121708A1 (en) 2005-12-22
GB2415046A (en) 2005-12-14

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)