BE441654A - - Google Patents

Info

Publication number
BE441654A
BE441654A BE441654DA BE441654A BE 441654 A BE441654 A BE 441654A BE 441654D A BE441654D A BE 441654DA BE 441654 A BE441654 A BE 441654A
Authority
BE
Belgium
Application number
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.)
Publication of BE441654A publication Critical patent/BE441654A/xx

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)
BE441654D 1940-03-30 BE441654A (xx)

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
BE441654A true BE441654A (xx)

Family

ID=23274890

Family Applications (1)

Application Number Title Priority Date Filing Date
BE441654D BE441654A (xx) 1940-03-30

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
NL233135A (xx) * 1957-11-13

Also Published As

Publication number Publication date
GB546182A (en) 1942-07-01
US2328478A (en) 1943-08-31
FR867852A (fr) 1941-12-02

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