SE511959C2 - Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets - Google Patents

Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets

Info

Publication number
SE511959C2
SE511959C2 SE9701521A SE9701521A SE511959C2 SE 511959 C2 SE511959 C2 SE 511959C2 SE 9701521 A SE9701521 A SE 9701521A SE 9701521 A SE9701521 A SE 9701521A SE 511959 C2 SE511959 C2 SE 511959C2
Authority
SE
Sweden
Prior art keywords
transistor
input signal
signal
power amplifier
temperature
Prior art date
Application number
SE9701521A
Other languages
English (en)
Swedish (sv)
Other versions
SE9701521L (sv
SE9701521D0 (sv
Inventor
Thomas Jan Peter Nordwall
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9701521A priority Critical patent/SE511959C2/sv
Publication of SE9701521D0 publication Critical patent/SE9701521D0/xx
Priority to EEP199900468A priority patent/EE9900468A/xx
Priority to CN98804374A priority patent/CN1113454C/zh
Priority to EP98917849A priority patent/EP0983631B1/en
Priority to DE69824846T priority patent/DE69824846T2/de
Priority to JP54557598A priority patent/JP2001521709A/ja
Priority to AU70900/98A priority patent/AU734808B2/en
Priority to IDW991257A priority patent/ID23901A/id
Priority to PCT/SE1998/000618 priority patent/WO1998048509A2/en
Priority to RU99124570/09A priority patent/RU2168262C1/ru
Priority to KR1019997009417A priority patent/KR20010006332A/ko
Priority to BR9808611-1A priority patent/BR9808611A/pt
Priority to CA002287264A priority patent/CA2287264A1/en
Priority to IL13224698A priority patent/IL132246A/xx
Priority to US09/063,273 priority patent/US6014059A/en
Publication of SE9701521L publication Critical patent/SE9701521L/
Priority to NO19995112A priority patent/NO315139B1/no
Publication of SE511959C2 publication Critical patent/SE511959C2/sv
Priority to HK00106827A priority patent/HK1027917A1/xx

Links

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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • 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
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
SE9701521A 1997-04-21 1997-04-21 Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets SE511959C2 (sv)

Priority Applications (17)

Application Number Priority Date Filing Date Title
SE9701521A SE511959C2 (sv) 1997-04-21 1997-04-21 Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets
IL13224698A IL132246A (en) 1997-04-21 1998-04-03 Power amplifier and method for temperature control therein
PCT/SE1998/000618 WO1998048509A2 (en) 1997-04-21 1998-04-03 Power amplifier and method for temperature control therein
KR1019997009417A KR20010006332A (ko) 1997-04-21 1998-04-03 전력 증폭기 및 그 온도 제어 방법
EP98917849A EP0983631B1 (en) 1997-04-21 1998-04-03 Power amplifier and method therein
DE69824846T DE69824846T2 (de) 1997-04-21 1998-04-03 Leistungsverstärker und verfahren zur verwendung
JP54557598A JP2001521709A (ja) 1997-04-21 1998-04-03 電力増幅器およびその方法
AU70900/98A AU734808B2 (en) 1997-04-21 1998-04-03 Power amplifier and method therein
IDW991257A ID23901A (id) 1997-04-21 1998-04-03 Amplifier daya dan metodenya
EEP199900468A EE9900468A (et) 1997-04-21 1998-04-03 Võimsusvõimendi ja selles kasutatav meetod
RU99124570/09A RU2168262C1 (ru) 1997-04-21 1998-04-03 Усилитель мощности и способ, реализованный в нем
CN98804374A CN1113454C (zh) 1997-04-21 1998-04-03 功率放大器及功率放大器中的控制方法
BR9808611-1A BR9808611A (pt) 1997-04-21 1998-04-03 Circuito amplificador de potência, e, processo de controle da temperatura de um transistor num circuito amplificador de potência.
CA002287264A CA2287264A1 (en) 1997-04-21 1998-04-03 Power amplifier and method therein
US09/063,273 US6014059A (en) 1997-04-21 1998-04-21 Power amplifier and method therein
NO19995112A NO315139B1 (no) 1997-04-21 1999-10-20 Effektforsterker samt fremgangsmåte for å kontrollere temperaturen i denne
HK00106827A HK1027917A1 (en) 1997-04-21 2000-10-26 Power amplifier and method therein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9701521A SE511959C2 (sv) 1997-04-21 1997-04-21 Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets

Publications (3)

Publication Number Publication Date
SE9701521D0 SE9701521D0 (sv) 1997-04-21
SE9701521L SE9701521L (sv) 1998-10-22
SE511959C2 true SE511959C2 (sv) 1999-12-20

Family

ID=20406691

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701521A SE511959C2 (sv) 1997-04-21 1997-04-21 Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets

Country Status (17)

Country Link
US (1) US6014059A (no)
EP (1) EP0983631B1 (no)
JP (1) JP2001521709A (no)
KR (1) KR20010006332A (no)
CN (1) CN1113454C (no)
AU (1) AU734808B2 (no)
BR (1) BR9808611A (no)
CA (1) CA2287264A1 (no)
DE (1) DE69824846T2 (no)
EE (1) EE9900468A (no)
HK (1) HK1027917A1 (no)
ID (1) ID23901A (no)
IL (1) IL132246A (no)
NO (1) NO315139B1 (no)
RU (1) RU2168262C1 (no)
SE (1) SE511959C2 (no)
WO (1) WO1998048509A2 (no)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6201873B1 (en) * 1998-06-08 2001-03-13 Nortel Networks Limited Loudspeaker-dependent audio compression
KR20020047341A (ko) * 2000-12-13 2002-06-22 구자홍 파워앰프의 온도 보상 회로
DE10120524B4 (de) * 2001-04-26 2015-08-20 Infineon Technologies Ag Vorrichtung zur Ermittlung des Stromes durch ein Leistungs-Halbleiterbauelement
US6621351B2 (en) * 2001-08-23 2003-09-16 Motorola, Inc. RF amplifier and method therefor
US6927626B2 (en) * 2002-09-23 2005-08-09 Harman International Industries, Incorporated Thermal protection system for an output stage of an amplifier
JP2006287847A (ja) * 2005-04-05 2006-10-19 Roland Corp 過熱防止装置
DE602006018343D1 (de) * 2005-09-26 2010-12-30 Nxp Bv Elektronische vorrichtung mit einer verstärkerausgangsbühne und einem überstromerkennungsmittel
JP4484858B2 (ja) * 2006-10-19 2010-06-16 日立ビークルエナジー株式会社 蓄電池管理装置およびそれを備える車両制御装置
JP2008244554A (ja) * 2007-03-26 2008-10-09 Toa Corp オーディオ装置の過電流保護回路
US20100188136A1 (en) * 2009-01-27 2010-07-29 Rockford Corporation Dynamic thermal management system and method
US8089313B2 (en) * 2009-10-19 2012-01-03 Industrial Technology Research Institute Power amplifier
US9054658B2 (en) * 2011-05-13 2015-06-09 Bose Corporation Power supply with rectifier protection
US8995521B2 (en) * 2012-10-30 2015-03-31 Lsi Corporation Method and apparatus for high density pulse density modulation
US9225290B2 (en) * 2013-11-26 2015-12-29 Microelectronics Technology, Inc. Radio frequency signal amplifying system
DE102017209072A1 (de) * 2017-05-30 2018-12-06 Robert Bosch Gmbh Verfahren zum Übertemperaturschutz und Audioeinrichtung
DE102020211746A1 (de) 2020-09-21 2022-03-24 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren zum Anpassen einer Verlustleistung eines Audioverstärkers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480835A (en) * 1967-03-10 1969-11-25 Weston Instruments Inc Thermal rms limiter and semiconductor driving circuit means
US3864642A (en) * 1971-02-01 1975-02-04 Motorola Inc Second stage overload protection for amplifiers
US4042889A (en) * 1976-05-14 1977-08-16 Combustion Engineering, Inc. Overvoltage protection circuit for general purpose amplifier
DE2637270C2 (de) * 1976-08-19 1978-05-03 Standard Elektrik Lorenz Ag, 7000 Stuttgart Überlastungsschutzeinrichtung
US4321554A (en) * 1980-01-14 1982-03-23 Qsc Audio Products, Inc. Time-delayed, variable output current limiting means for power amplifiers
US4355287A (en) * 1980-09-30 1982-10-19 Rca Corporation Bridge amplifiers employing complementary field-effect transistors
FR2661053A1 (fr) * 1990-04-17 1991-10-18 Europ Agence Spatiale Procede de commande d'un dispositif de protection thermique d'un transistor de puissance, et systeme de mise en óoeuvre du procede.
GB9300669D0 (en) * 1993-01-14 1993-03-03 Marshall Amplification Plc Audio amplifier
US5524055A (en) * 1994-01-18 1996-06-04 Peavey Electronics Corporation Solid state circuit for emulating tube compression effect
WO1995031035A1 (en) * 1994-05-10 1995-11-16 Ericsson Inc. Thermally controlled, linear power reduction circuit

Also Published As

Publication number Publication date
EP0983631B1 (en) 2004-06-30
EP0983631A1 (en) 2000-03-08
SE9701521L (sv) 1998-10-22
DE69824846T2 (de) 2005-07-07
US6014059A (en) 2000-01-11
CA2287264A1 (en) 1998-10-29
NO995112D0 (no) 1999-10-20
WO1998048509A2 (en) 1998-10-29
WO1998048509A3 (en) 1999-01-28
CN1252904A (zh) 2000-05-10
AU734808B2 (en) 2001-06-21
IL132246A (en) 2003-09-17
DE69824846D1 (de) 2004-08-05
NO315139B1 (no) 2003-07-14
SE9701521D0 (sv) 1997-04-21
NO995112L (no) 1999-12-20
KR20010006332A (ko) 2001-01-26
BR9808611A (pt) 2000-05-23
CN1113454C (zh) 2003-07-02
EE9900468A (et) 2000-06-15
JP2001521709A (ja) 2001-11-06
RU2168262C1 (ru) 2001-05-27
ID23901A (id) 2000-05-25
AU7090098A (en) 1998-11-13
HK1027917A1 (en) 2001-01-23
IL132246A0 (en) 2001-03-19

Similar Documents

Publication Publication Date Title
SE511959C2 (sv) Effektförstärkarkrets och metod för att styra en transistors temperatur i en effektförstärkarkrets
EP2387150B1 (en) Automatic bias control circuit for linear power amplifiers
JP2003243956A (ja) パワーアンプクリッピング回路及びパワーアンプ出力クリッピング方法
JP3335853B2 (ja) 可変減衰器
US4388540A (en) Controllable multiplier circuit with expanded gain control range
US7701285B2 (en) Power amplifiers having improved startup linearization and related operating methods
EP0400819B1 (en) Low bias, high slew rate operational amplifier
US4115741A (en) Fast attack automatic gain control circuit
KR100397332B1 (ko) 이동단말기에서 자동이득제어기의 온도보상회로
CN108141185B (zh) 包括限幅的放大装置
US3691311A (en) Telephone user set
WO2020168993A1 (zh) 信号处理电路及音频功率放大电路
US3786200A (en) Amplifier for use in communication systems
US5315268A (en) Audio power amplifier
US2895045A (en) Radio receiver with transistorized audio - detector and automatic gain control circuitry
CA1045044A (en) Audio agc amplifier
Xiangning et al. An efficient CMOS DC offset cancellation circuit for PGA of low IF wireless receivers
Xiangning et al. A CMOS DC offset cancellation (DOC) circuit for PGA of low IF wireless receivers
US6980052B1 (en) Low-voltage pre-distortion circuit for linear-in-dB variable-gain cells
EP3235132A1 (en) Differential comparator
US5321746A (en) Adjustable gain range current mirror
KR100275937B1 (ko) 신호압축회로
TWI798883B (zh) 訊號調整電路及使用其之接收端電路
EP0508711A1 (en) Transistor direct-coupled amplifier
US5111159A (en) Amplifier circuit with open-loop gain that can be varied with respect to closed-loop gain

Legal Events

Date Code Title Description
NUG Patent has lapsed