BE720115A - - Google Patents

Info

Publication number
BE720115A
BE720115A BE720115DA BE720115A BE 720115 A BE720115 A BE 720115A BE 720115D A BE720115D A BE 720115DA BE 720115 A BE720115 A BE 720115A
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.)
Filing date
Publication date
Application filed filed Critical
Publication of BE720115A publication Critical patent/BE720115A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • 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
BE720115D 1968-08-29 1968-08-29 BE720115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE720115 1968-08-29

Publications (1)

Publication Number Publication Date
BE720115A true BE720115A (en) 1969-02-03

Family

ID=3853448

Family Applications (1)

Application Number Title Priority Date Filing Date
BE720115D BE720115A (en) 1968-08-29 1968-08-29

Country Status (4)

Country Link
US (1) US3647969A (en)
BE (1) BE720115A (en)
FR (1) FR2016588A1 (en)
GB (1) GB1276344A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638258A (en) * 1982-02-26 1987-01-20 Barcus-Berry Electronics, Inc. Reference load amplifier correction system
NL8401041A (en) * 1984-04-03 1985-11-01 Philips Nv ELECTRO-ACOUSTIC DEVICE.
US5031221A (en) * 1987-06-02 1991-07-09 Yamaha Corporation Dynamic loudspeaker driving apparatus
US5009281A (en) * 1988-03-10 1991-04-23 Yamaha Corporation Acoustic apparatus
EP0340435A3 (en) * 1988-04-01 1991-04-24 Yamaha Corporation Acoustic apparatus
JPH0728473B2 (en) * 1988-05-06 1995-03-29 ヤマハ株式会社 Impedance compensation circuit
US4985925A (en) * 1988-06-24 1991-01-15 Sensor Electronics, Inc. Active noise reduction system
GB2234880A (en) * 1989-07-31 1991-02-13 David Robin Birt Controlling the Q factor of loudspeakers
US5604813A (en) * 1994-05-02 1997-02-18 Noise Cancellation Technologies, Inc. Industrial headset
US6683965B1 (en) 1995-10-20 2004-01-27 Bose Corporation In-the-ear noise reduction headphones
US6396930B1 (en) 1998-02-20 2002-05-28 Michael Allen Vaudrey Active noise reduction for audiometry
FR2778741B1 (en) * 1998-05-12 2001-04-27 Ct Scient Tech Batiment Cstb ACTIVE ACOUSTIC IMPEDANCE CONTROL DEVICE
CA2408045A1 (en) * 2001-10-16 2003-04-16 Audio Products International Corp. Loudspeaker with large displacement motional feedback
DE102007002920B4 (en) 2007-01-19 2012-09-20 Wolfgang Halang Method for determining the membrane velocity of a dynamic loudspeaker
GB201712391D0 (en) 2017-08-01 2017-09-13 Turner Michael James Controller for an electromechanical transducer
JP7015681B2 (en) * 2017-11-30 2022-02-03 Koa株式会社 Heater temperature control circuit and sensor device using it

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887532A (en) * 1956-10-31 1959-05-19 Rca Corp Audio frequency amplifier
US3047661A (en) * 1957-01-18 1962-07-31 Daniel E Winker High fidelity audio system
US3530244A (en) * 1967-02-13 1970-09-22 Martin G Reiffin Motional feedback amplifier systems
US3525812A (en) * 1969-05-08 1970-08-25 James E Verdier Transducer circuit and method of operation

Also Published As

Publication number Publication date
GB1276344A (en) 1972-06-01
US3647969A (en) 1972-03-07
FR2016588A1 (en) 1970-05-08

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