CN1801590B - 电压供应电路和扩音器单元 - Google Patents

电压供应电路和扩音器单元 Download PDF

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Publication number
CN1801590B
CN1801590B CN2006100057486A CN200610005748A CN1801590B CN 1801590 B CN1801590 B CN 1801590B CN 2006100057486 A CN2006100057486 A CN 2006100057486A CN 200610005748 A CN200610005748 A CN 200610005748A CN 1801590 B CN1801590 B CN 1801590B
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CN
China
Prior art keywords
voltage
feedback resistor
output
amplifier
booster
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 - Fee Related
Application number
CN2006100057486A
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English (en)
Chinese (zh)
Other versions
CN1801590A (zh
Inventor
丹羽史幸
井田雅之
木下博茂
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Renesas Electronics Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of CN1801590A publication Critical patent/CN1801590A/zh
Application granted granted Critical
Publication of CN1801590B publication Critical patent/CN1801590B/zh
Expired - Fee Related legal-status Critical Current
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    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00—Suspension or cable-stayed bridges
    • E01D11/02—Suspension bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
    • E01D19/103—Parapets, railings ; Guard barriers or road-bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
    • 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
    • H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
    • H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
    • H03F1/0261—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the polarisation voltage or current, e.g. gliding Class A

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Amplifiers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
CN2006100057486A 2005-01-06 2006-01-06 电压供应电路和扩音器单元 Expired - Fee Related CN1801590B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005-001381 2005-01-06
JP2005001381A JP4440121B2 (ja) 2005-01-06 2005-01-06 電圧供給回路およびマイクユニット
JP2005001381 2005-01-06

Publications (2)

Publication Number Publication Date
CN1801590A CN1801590A (zh) 2006-07-12
CN1801590B true CN1801590B (zh) 2010-10-13

Family

ID=36640476

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2006100057486A Expired - Fee Related CN1801590B (zh) 2005-01-06 2006-01-06 电压供应电路和扩音器单元

Country Status (4)

Country Link
US (1) US7864970B2 (enExample)
JP (1) JP4440121B2 (enExample)
KR (1) KR100760877B1 (enExample)
CN (1) CN1801590B (enExample)

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US8233643B1 (en) * 2010-03-23 2012-07-31 Fiberplex Technologies, LLC System and method for amplifying low level signals provided on electrical supply power
US9099961B2 (en) 2010-04-19 2015-08-04 Rf Micro Devices, Inc. Output impedance compensation of a pseudo-envelope follower power management system
US9431974B2 (en) 2010-04-19 2016-08-30 Qorvo Us, Inc. Pseudo-envelope following feedback delay compensation
US8493141B2 (en) 2010-04-19 2013-07-23 Rf Micro Devices, Inc. Pseudo-envelope following power management system
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US8494184B2 (en) * 2010-07-18 2013-07-23 Bose Corporation Digital data transfer via audio signal conductors
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US9250643B2 (en) 2011-11-30 2016-02-02 Rf Micro Devices, Inc. Using a switching signal delay to reduce noise from a switching power supply
US9515621B2 (en) 2011-11-30 2016-12-06 Qorvo Us, Inc. Multimode RF amplifier system
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US9256234B2 (en) 2011-12-01 2016-02-09 Rf Micro Devices, Inc. Voltage offset loop for a switching controller
US9280163B2 (en) 2011-12-01 2016-03-08 Rf Micro Devices, Inc. Average power tracking controller
US9494962B2 (en) 2011-12-02 2016-11-15 Rf Micro Devices, Inc. Phase reconfigurable switching power supply
JP5979855B2 (ja) * 2011-12-06 2016-08-31 株式会社オーディオテクニカ コンデンサマイクロホン
US9813036B2 (en) 2011-12-16 2017-11-07 Qorvo Us, Inc. Dynamic loadline power amplifier with baseband linearization
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US9929696B2 (en) 2013-01-24 2018-03-27 Qorvo Us, Inc. Communications based adjustments of an offset capacitive voltage
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CN104168529B (zh) * 2013-05-17 2018-08-28 上海耐普微电子有限公司 多模式的微机械麦克风
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JP2015115881A (ja) * 2013-12-13 2015-06-22 株式会社東芝 差動増幅回路およびマイクアンプシステム
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JP2019208128A (ja) * 2018-05-29 2019-12-05 ヤマハ株式会社 信号伝送回路及び信号伝送方法
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Also Published As

Publication number Publication date
US7864970B2 (en) 2011-01-04
JP2006191360A (ja) 2006-07-20
US20060147062A1 (en) 2006-07-06
JP4440121B2 (ja) 2010-03-24
KR100760877B1 (ko) 2007-09-21
CN1801590A (zh) 2006-07-12
KR20060080892A (ko) 2006-07-11

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: RENESAS ELECTRONICS CO., LTD.

Free format text: FORMER NAME: NEC CORP.

CP01 Change in the name or title of a patent holder

Address after: Kanagawa, Japan

Patentee after: Renesas Electronics Corporation

Address before: Kanagawa, Japan

Patentee before: NEC Corp.

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101013

Termination date: 20140106