MY138040A - Apparatus for providing amplification with multi-feedback path - Google Patents

Apparatus for providing amplification with multi-feedback path

Info

Publication number
MY138040A
MY138040A MYPI20050578A MY138040A MY 138040 A MY138040 A MY 138040A MY PI20050578 A MYPI20050578 A MY PI20050578A MY 138040 A MY138040 A MY 138040A
Authority
MY
Malaysia
Prior art keywords
output
output device
feedback
stage
negative feedback
Prior art date
Application number
Inventor
Wong Pak Koon
Ming Ing Lau
Original Assignee
Tube Amp Sdn Bhd
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 Tube Amp Sdn Bhd filed Critical Tube Amp Sdn Bhd
Priority to MYPI20050578 priority Critical patent/MY138040A/en
Priority to CN2006800014258A priority patent/CN101091308B/en
Priority to PCT/CN2006/000127 priority patent/WO2006086924A1/en
Publication of MY138040A publication Critical patent/MY138040A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • 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
    • H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
    • H03F1/18—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of distributed coupling, i.e. distributed amplifiers
    • H03F1/20—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of distributed coupling, i.e. distributed amplifiers in discharge-tube 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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • 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
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/02—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with tubes only
    • 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
    • H03F3/20—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3001—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor with field-effect transistors
    • H03F3/3033—NMOS SEPP output stages
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/42—Amplifiers with two or more amplifying elements having their DC paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
    • 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
    • H03F2200/549—Indexing scheme relating to amplifiers the amplifier comprising means to emulate the vacuum tube behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)

Abstract

THERE IS DISCLOSED AN APPARATUS FOR AMPLIFICATION COMPRISES OF A FRONT-END INPUT STAGE (110) HAVING A DRIVER MODULE (120), MULTI-FEEDBACK PORT (102), A PHASE INVERSION STAGE (130) WITH IMPROVED SIGNAL COUPLING, DISTRIBUTED NEGATIVE FEEDBACK (300) AND AN OUTPUT STAGE (150) WITH ASYMMETRY OUTPUT DEVICE. THE APPARATUS ALSO INCLUDES A BALANCED EQUALIZATION METHOD USING NEGATIVE FEEDBACK WHERE THE OUTPUT STAGE PROVIDING NEGATIVE MULTIPLE FEEDBACK TOGETHER WITH PREDETERMINED OUTPUT IMPEDANCE, SEPARATED BIAS CONTROL AND SIGNAL DRIVE FOR EACH OF THE OUTPUT DEVICE. POWER SUPPLY (250) IS IMPLEMENTED HAVING DUAL POWER TRANSFORMER (230) WHICH PROVIDES COMPENSATED BIAS FOR THE OUTPUT DEVICE. IN THE PREFERRED EMBODIMENT, THE APPARATUS ALSO INCLUDES MEANS TO INCREASE SLEW RATE, MEANS FOR PROVIDING DISTRIBUTED NEGATIVE FEEDBACK TO REDUCE PHASE SHIFT, MEANS TO BOOTSTRAP UPPER OUTPUT DEVICE, MEANS FOR DIFFERENTIAL ADJUSTMENT FOR FEEDBACK, MEANS TO DRIVE HIGH VOLTAGE AND CURRENT DRIVE SIGNAL. SHORT CIRCUIT PROTECTION FOR SPEAKER, MEANS TO MINIMIZE LETHAL DC OUTPUT AT OUTPUT TERMINAL, MEANS FOR OBTAINING SUITABLE HIGH TENSION VOLTAGE AND BIAS CIRCUIT AND OUTPUT STAGE HAVING ALL DEVICES SEPARATELY FUSED TO PROVIDE INDICATION OF FAULTY OUTPUT DEVICE ARE ALSO DISCLOSED.
MYPI20050578 2005-02-17 2005-02-17 Apparatus for providing amplification with multi-feedback path MY138040A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MYPI20050578 MY138040A (en) 2005-02-17 2005-02-17 Apparatus for providing amplification with multi-feedback path
CN2006800014258A CN101091308B (en) 2005-02-17 2006-02-16 Instruments that utilize multiple feedback routes to provide gain
PCT/CN2006/000127 WO2006086924A1 (en) 2005-02-17 2006-02-16 Apparatus for providing amplification with multi-feedback path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MYPI20050578 MY138040A (en) 2005-02-17 2005-02-17 Apparatus for providing amplification with multi-feedback path

Publications (1)

Publication Number Publication Date
MY138040A true MY138040A (en) 2009-04-30

Family

ID=36916154

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20050578 MY138040A (en) 2005-02-17 2005-02-17 Apparatus for providing amplification with multi-feedback path

Country Status (3)

Country Link
CN (1) CN101091308B (en)
MY (1) MY138040A (en)
WO (1) WO2006086924A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7974317B2 (en) * 2007-12-20 2011-07-05 Qualcomm Incorporated Systems and methods for controlling the voltage of signals used to control power amplifiers
CN104330446B (en) * 2014-09-01 2016-11-23 四川拉雅微科技有限公司 High-accuracy portable Electrochemical Detection front end
EP3151424A1 (en) * 2015-09-30 2017-04-05 Nawrocki, Piotr Electronic system of a hybrid amplifier
US10320343B1 (en) 2018-03-08 2019-06-11 Real Analog, Llc Amplifier output stage using toroidal transformer
EP3855624A1 (en) * 2020-01-22 2021-07-28 Infineon Technologies AG Overvoltage protection circuit and device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE255784T1 (en) * 1996-10-31 2003-12-15 Bang & Olufsen As PULSE MODULATED POWER AMPLIFIER WITH IMPROVED CASCADED CONTROL METHOD
JP2004221646A (en) * 2003-01-09 2004-08-05 Nec Corp Doherty amplifier
US6812796B2 (en) * 2003-02-18 2004-11-02 02Micro International Limited Inter-stage coupling in multistage amplifiers

Also Published As

Publication number Publication date
CN101091308A (en) 2007-12-19
CN101091308B (en) 2010-05-19
WO2006086924A1 (en) 2006-08-24

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