PL442532A1 - Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych - Google Patents

Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych

Info

Publication number
PL442532A1
PL442532A1 PL442532A PL44253222A PL442532A1 PL 442532 A1 PL442532 A1 PL 442532A1 PL 442532 A PL442532 A PL 442532A PL 44253222 A PL44253222 A PL 44253222A PL 442532 A1 PL442532 A1 PL 442532A1
Authority
PL
Poland
Prior art keywords
condenser microphone
preamplifier
frequency range
biasing
infrasonic frequency
Prior art date
Application number
PL442532A
Other languages
English (en)
Inventor
Mariusz Suchenek
Original Assignee
Centrum Astronomiczne Im. Mikołaja Kopernika Polskiej Akademii Nauk
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 Centrum Astronomiczne Im. Mikołaja Kopernika Polskiej Akademii Nauk filed Critical Centrum Astronomiczne Im. Mikołaja Kopernika Polskiej Akademii Nauk
Priority to PL442532A priority Critical patent/PL442532A1/pl
Priority to EP23202565.0A priority patent/EP4354728A1/en
Publication of PL442532A1 publication Critical patent/PL442532A1/pl

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F1/00Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/56Modifications of input or output impedances, not otherwise provided for
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/181Low frequency amplifiers, e.g. audio preamplifiers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45Differential amplifiers
    • H03F3/45071Differential amplifiers with semiconductor devices only
    • H03F3/45076Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45475Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using IC blocks as the active amplifying circuit
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00Circuits for transducers, loudspeakers or microphones
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/03Indexing scheme relating to amplifiers the amplifier being designed for audio applications
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2200/00Indexing scheme relating to amplifiers
    • H03F2200/144Indexing scheme relating to amplifiers the feedback circuit of the amplifier stage comprising a passive resistor and passive capacitor
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45Indexing scheme relating to differential amplifiers
    • H03F2203/45514Indexing scheme relating to differential amplifiers the FBC comprising one or more switched capacitors, and being coupled between the LC and the IC
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45Indexing scheme relating to differential amplifiers
    • H03F2203/45526Indexing scheme relating to differential amplifiers the FBC comprising a resistor-capacitor combination and being coupled between the LC and the IC
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03FAMPLIFIERS
    • H03F2203/00Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45Indexing scheme relating to differential amplifiers
    • H03F2203/45528Indexing scheme relating to differential amplifiers the FBC comprising one or more passive resistors and being coupled between the LC and the IC

Abstract

Przedmiotem zgłoszenia jest przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych zawiera wzmacniacz operacyjny (4), mikrofon pojemnościowy (3), który tworzy kondensator oraz źródło napięcia polaryzującego (6). Ponadto przedwzmacniacz do mikrofonu pojemnościowego posiada obwód polaryzujący (16) lub rezystor polaryzujący, przy czym obwód polaryzujący (16) lub rezystor polaryzujący jest połączony z wejściem wzmacniacza operacyjnego (4) oraz z jedną końcówką mikrofonu pojemnościowego (3), przy czym druga końcówka mikrofonu pojemnościowego (3) jest połączona ze źródłem napięcia polaryzującego (6).
PL442532A 2022-10-14 2022-10-14 Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych PL442532A1 (pl)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL442532A PL442532A1 (pl) 2022-10-14 2022-10-14 Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych
EP23202565.0A EP4354728A1 (en) 2022-10-14 2023-10-10 Preamplifier for capacitator microphone operating in the infrasonic frequency range

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL442532A PL442532A1 (pl) 2022-10-14 2022-10-14 Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych

Publications (1)

Publication Number Publication Date
PL442532A1 true PL442532A1 (pl) 2024-04-15

Family

ID=88647705

Family Applications (1)

Application Number Title Priority Date Filing Date
PL442532A PL442532A1 (pl) 2022-10-14 2022-10-14 Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych

Country Status (2)

Country Link
EP (1) EP4354728A1 (pl)
PL (1) PL442532A1 (pl)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL374069A1 (pl) * 2005-04-01 2006-10-02 Politechnika Warszawska Przedwzmacniacz do mikrofonów pojemnościowych
US7620189B2 (en) * 2004-03-30 2009-11-17 Akg Acoustics Gmbh Polarization voltage setting of microphones
RU2768203C1 (ru) * 2021-08-09 2022-03-23 Общество с ограниченной ответственностью "ОКТАВА ДИЗАЙН И МАРКЕТИНГ" Микрофонный усилитель

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100581032C (zh) 2003-12-01 2010-01-13 音频专用集成电路公司 具有电压泵的麦克风
ITTO20090495A1 (it) 2009-06-30 2011-01-01 St Microelectronics Srl Circuito preamplificatore per un trasduttore acustico capacitivo di tipo microelettromeccanico
US9236837B2 (en) * 2011-08-25 2016-01-12 Infineon Technologies Ag System and method for low distortion capacitive signal source amplifier
DK3454568T3 (da) 2017-09-12 2021-01-11 G R A S Sound & Vibration As Mikrofon-forforstærker med polariseringsspændingsforsyning
CN112449757B (zh) * 2018-08-08 2022-06-10 朝阳半导体技术江阴有限公司 具有内建自测试的电容性mems麦克风

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7620189B2 (en) * 2004-03-30 2009-11-17 Akg Acoustics Gmbh Polarization voltage setting of microphones
PL374069A1 (pl) * 2005-04-01 2006-10-02 Politechnika Warszawska Przedwzmacniacz do mikrofonów pojemnościowych
RU2768203C1 (ru) * 2021-08-09 2022-03-23 Общество с ограниченной ответственностью "ОКТАВА ДИЗАЙН И МАРКЕТИНГ" Микрофонный усилитель

Also Published As

Publication number Publication date
EP4354728A1 (en) 2024-04-17

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