GB872886A - Improvements in and relating to transducers - Google Patents

Improvements in and relating to transducers

Info

Publication number
GB872886A
GB872886A GB37008/56A GB3700856A GB872886A GB 872886 A GB872886 A GB 872886A GB 37008/56 A GB37008/56 A GB 37008/56A GB 3700856 A GB3700856 A GB 3700856A GB 872886 A GB872886 A GB 872886A
Authority
GB
United Kingdom
Prior art keywords
strip
antimonide
electrodes
layer
indium antimonide
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
GB37008/56A
Inventor
Alberto Loro
George Victor Planer
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.)
Cosmocord Ltd
Original Assignee
Cosmocord 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 Cosmocord Ltd filed Critical Cosmocord Ltd
Publication of GB872886A publication Critical patent/GB872886A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones

Abstract

872,886. Microphones; pick-ups. COSMOCORD Ltd. Nov. 14, 1957 [Dec. 4, 1956], No. 37008/56. Class 40 (4). [Also in Group XXXVI] A magneto-resistive transducer element of a microphone or pick-up comprises a strip of indium antimonide supported in a magnetic field with a substantial gradient. The resistance of the strip changes when the strip is displaced. A thin 1 layer of indium antimonide is deposited on a support 2 of glass. The strip is defined by a gap 4 between two silver electrodes 5, 6 laid over the antimonide. Terminal leads are attached to the electrodes by silver paint 7. The glass support is attached to a diaphragm or stylus. The electrodes 5, 6 and the antimonide layer 1 may be divided along lines 10, 11, 12, Fig. 2, to provide a circuit through four elements in series. The magnetic field is provided by a permanent magnet with pole pieces 8, 9. The layer 1 of indium antimonide may be deposited by vacuum deposition, cathode sputtering, spraying, spreading or by a combined photographic and etching process.
GB37008/56A 1956-12-04 1956-12-04 Improvements in and relating to transducers Expired GB872886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB345483X 1956-12-04

Publications (1)

Publication Number Publication Date
GB872886A true GB872886A (en) 1961-07-12

Family

ID=10366980

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37008/56A Expired GB872886A (en) 1956-12-04 1956-12-04 Improvements in and relating to transducers

Country Status (4)

Country Link
CH (1) CH345483A (en)
DE (1) DE1165291B (en)
GB (1) GB872886A (en)
NL (2) NL222633A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522390A (en) * 1965-04-12 1970-07-28 Harry H Wieder Magnetoresistive transducer having microscopic hall field shorting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29618546U1 (en) * 1996-10-24 1997-01-23 Simanok Thomas Case for cards with magnetic stripes and / or chips

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE590678C (en) * 1931-09-15 1934-01-08 Reinhold Bauder Dipl Ing Cell for measuring field strength or induction of magnetic fields
US2562120A (en) * 1948-08-26 1951-07-24 Bell Telephone Labor Inc Magnetic field strength meter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522390A (en) * 1965-04-12 1970-07-28 Harry H Wieder Magnetoresistive transducer having microscopic hall field shorting

Also Published As

Publication number Publication date
NL222633A (en)
CH345483A (en) 1960-03-31
NL283744A (en)
DE1165291B (en) 1964-03-12

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