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GB801966A - Electric transducer - Google Patents

Electric transducer

Info

Publication number
GB801966A
GB801966A GB1458555A GB1458555A GB801966A GB 801966 A GB801966 A GB 801966A GB 1458555 A GB1458555 A GB 1458555A GB 1458555 A GB1458555 A GB 1458555A GB 801966 A GB801966 A GB 801966A
Authority
GB
United Kingdom
Prior art keywords
indium antimonide
relative
piece
transducer
magnetic field
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
GB1458555A
Inventor
Ian Murray Ross
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to GB1458555A priority Critical patent/GB801966A/en
Publication of GB801966A publication Critical patent/GB801966A/en
Expired 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
    • G01D5/142—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 using Hall-effect devices
    • G01D5/145—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 using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

801,966. Transducers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 2, 1956 [May 20, 1955], No. 14585/55. Class 40 (1). [Also in Group XXXIX] A transducer comprises a piece of indium antimonide material caused to move relative to a non- uniform magnetic field. The transducer may utilize either the Hall effect or the magneto-resistance effect. As shown, a device for measuring small displacements comprises a stylus S capable of moving the magnetic gap NS relative to two pieces of indium antimonide C, C<SP>1</SP> so arranged that as the field through one increases, that through the other decreases. Relative changes in their resistances are measured by the galvanometer G in the diagonal arm of a Wheatstone bridge. In a further embodiment a device for measuring. surface roughness comprises a piece of indium antimonide movable relative to a magnetic field, the indium antimonide being fed with A.C. for modulation by the changes in semiconductor resistance. A microphone using the Hall effect is also described (see Group XXXIX].
GB1458555A 1955-05-20 1955-05-20 Electric transducer Expired GB801966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1458555A GB801966A (en) 1955-05-20 1955-05-20 Electric transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1458555A GB801966A (en) 1955-05-20 1955-05-20 Electric transducer

Publications (1)

Publication Number Publication Date
GB801966A true GB801966A (en) 1958-09-24

Family

ID=10043889

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1458555A Expired GB801966A (en) 1955-05-20 1955-05-20 Electric transducer

Country Status (1)

Country Link
GB (1) GB801966A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757008A1 (en) * 1997-12-20 1999-06-24 Bosch Gmbh Robert Sensor for detecting angular variations, e.g. for automobile steering wheel shaft
WO2001046651A3 (en) * 1999-12-03 2002-02-07 Fisher Rosemount Systems Inc Flux shaping pole pieces for a magnetic displacement sensor
RU2839831C1 (en) * 2024-11-01 2025-05-13 Александр Алексеевич Семенов Hall effect microphone

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6515474B1 (en) 1997-08-06 2003-02-04 Fisher-Rosemount Systems, Inc. Linearized magnetic displacement sensor
DE19757008A1 (en) * 1997-12-20 1999-06-24 Bosch Gmbh Robert Sensor for detecting angular variations, e.g. for automobile steering wheel shaft
US6205866B1 (en) 1997-12-20 2001-03-27 Robert Bosch Gmbh Sensor arrangement for detecting changes in angle
WO2001046651A3 (en) * 1999-12-03 2002-02-07 Fisher Rosemount Systems Inc Flux shaping pole pieces for a magnetic displacement sensor
RU2839831C1 (en) * 2024-11-01 2025-05-13 Александр Алексеевич Семенов Hall effect microphone

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