PL442532A1 - Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych - Google Patents
Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowychInfo
- 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
Links
- 239000003990 capacitor Substances 0.000 abstract 1
Classifications
-
- 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
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low frequency amplifiers, e.g. audio preamplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/45475—Differential 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
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/03—Indexing scheme relating to amplifiers the amplifier being designed for audio applications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/144—Indexing scheme relating to amplifiers the feedback circuit of the amplifier stage comprising a passive resistor and passive capacitor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45514—Indexing scheme relating to differential amplifiers the FBC comprising one or more switched capacitors, and being coupled between the LC and the IC
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45526—Indexing scheme relating to differential amplifiers the FBC comprising a resistor-capacitor combination and being coupled between the LC and the IC
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/45—Indexing scheme relating to differential amplifiers
- H03F2203/45528—Indexing 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).
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)
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)
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 |
-
2022
- 2022-10-14 PL PL442532A patent/PL442532A1/pl unknown
-
2023
- 2023-10-10 EP EP23202565.0A patent/EP4354728A1/en active Pending
Patent Citations (3)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW200643427A (en) | Apparatus for current sensing | |
EP2363951A3 (en) | Mixer circuit and method | |
Konar et al. | Improvement of the gain accuracy of the instrumentation amplifier using a very high gain operational amplifier | |
DE60324451D1 (de) | Ungsschaltung für funkfrequenz-leistungsverstärker | |
WO2016133896A1 (en) | Linearity enhancement method for low-power low-noise amplifiers biased in the subthreshold region | |
ATE521131T1 (de) | Rauscharmer weitbereichsverstärker | |
JP2014087065A (ja) | アクティブ・シャント電流計及び被測定デバイスを流れる電流の測定方法 | |
US6218883B1 (en) | Semiconductor integrated circuit for electric microphone | |
PL442532A1 (pl) | Przedwzmacniacz do mikrofonu pojemnościowego pracującego w zakresie częstotliwości infradźwiękowych | |
DE602004023881D1 (de) | Dynamisch vorgespannter verstärker | |
GB496872A (en) | Improvements in or relating to thermionic valve amplifiers | |
CN109983692A (zh) | Mems传感器 | |
JP5960906B2 (ja) | 増幅回路 | |
DK170196B1 (da) | Fremgangsmåde og kobling til at reducere den harmoniske forvrængning af en kapacitiv transducer | |
US7129797B2 (en) | Wideband Gaussian white noise source | |
GB732630A (en) | Improvements in or relating to negative feedback amplifiers | |
Furst | A low-noise/low-power preamplifier for capacitive microphones | |
Park et al. | An analog correlator based CMOS analog front end with digital gain control circuit for hearing aid devices | |
US9692365B2 (en) | Electronic preamplifier system | |
US20110204972A1 (en) | Amplifying circuit | |
US9432776B2 (en) | Condenser microphone | |
JP6368591B2 (ja) | チャージアンプ回路 | |
WO2005060114A1 (ja) | 起動信号出力回路 | |
Sahoo et al. | Design of switched capacitor-based charge amplifier in 180 nm technology | |
KR920005458A (ko) | 증폭 회로 |