GB546182A - Improvements in piezoelectric devices for use as loud-speakers or in recording sound - Google Patents

Improvements in piezoelectric devices for use as loud-speakers or in recording sound

Info

Publication number
GB546182A
GB546182A GB1056/41A GB105641A GB546182A GB 546182 A GB546182 A GB 546182A GB 1056/41 A GB1056/41 A GB 1056/41A GB 105641 A GB105641 A GB 105641A GB 546182 A GB546182 A GB 546182A
Authority
GB
United Kingdom
Prior art keywords
electrodes
driven
feedback
piezo
loudspeaker
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
GB1056/41A
Other languages
English (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.)
Electrical Research Products Inc
Original Assignee
Electrical Research Products 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 Electrical Research Products Inc filed Critical Electrical Research Products Inc
Publication of GB546182A publication Critical patent/GB546182A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
GB1056/41A 1940-03-30 1941-01-27 Improvements in piezoelectric devices for use as loud-speakers or in recording sound Expired GB546182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US327045A US2328478A (en) 1940-03-30 1940-03-30 Piezoelectric transducer

Publications (1)

Publication Number Publication Date
GB546182A true GB546182A (en) 1942-07-01

Family

ID=23274890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1056/41A Expired GB546182A (en) 1940-03-30 1941-01-27 Improvements in piezoelectric devices for use as loud-speakers or in recording sound

Country Status (4)

Country Link
US (1) US2328478A (xx)
BE (1) BE441654A (xx)
FR (1) FR867852A (xx)
GB (1) GB546182A (xx)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2594841A (en) * 1945-08-11 1952-04-29 Brush Dev Co Piezoelectric transducer with pushpull and feedback circuit
US2635033A (en) * 1947-08-05 1953-04-14 Paul M Higgs Recorder for use in missiles
US2549550A (en) * 1948-08-19 1951-04-17 Bell Telephone Labor Inc Vibration-operated transistor
US2697757A (en) * 1951-02-17 1954-12-21 Pfanstiehl Chemical Corp Preamplifier
US2722569A (en) * 1951-04-12 1955-11-01 Socony Mobil Oil Co Inc Reproduction of low-frequency magnetically recorded signals
US2649507A (en) * 1951-08-28 1953-08-18 Paramount Pictures Corp Crystal light valve for sound-on-film recording
US3001031A (en) * 1954-11-18 1961-09-19 Astatic Corp Self-supporting electro-mechanical transducer assembly
NL104447C (xx) * 1957-10-29
NL106293C (xx) * 1957-11-13

Also Published As

Publication number Publication date
BE441654A (xx)
FR867852A (fr) 1941-12-02
US2328478A (en) 1943-08-31

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