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 Apparatus for providing amplification with multi-feedback path
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 (4)

* 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

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2271041C (en) * 1996-10-31 2003-03-18 Bang & Olufsen A/S Pulse modulation power amplifier with enhanced cascade 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

Similar Documents

Publication Publication Date Title
US9543913B2 (en) Programmably configured switchmode audio amplifier
CN100578924C (en) Processing method for output stage circuit, power amplification circuit and electrical signal
CN103686509B (en) Low-quiescent current headset driver and driving method
CN106896856A (en) Amplifying circuit and voltage regulator
KR101670477B1 (en) Method and apparatus for class ab audio amplifier output stage voltage protection
US9525937B2 (en) Circuit for suppressing audio output noise and audio output circuit
TW200500726A (en) Semiconductor integrated circuit
WO2004023648A3 (en) Amplifier power control circuit
US8665023B2 (en) Class-AB/B amplifier with quiescent control circuit
US20110304399A1 (en) Driver amplifier circuit and communication system
CN103117714A (en) Audio amplifier
MY138040A (en) Apparatus for providing amplification with multi-feedback path
CN101651447A (en) Amplifying circuit
KR987001154A (en) amplifier
TWI709958B (en) Single-ended class-a amplifier, steered current source for single-ended class-a amplifier, and method for increasing the power provided to an ac-coupled load from a single-ended class-a amplifier
US8441319B2 (en) Method and apparatus for biasing rail to rail DMOS amplifier output stage
US20070024367A1 (en) Operational amplifier and constant-current generation circuit using the same
US7538617B2 (en) Class AB amplifier circuit with combined quiescent current and common mode control
TW200615730A (en) Circuit device with different input/output common mode voltages
JP2017539158A (en) Solid switch / relay
TW200419899A (en) Operational amplifier with self control circuit for realizing high slew rate throughout full operating range
KR20040047779A (en) Circuits and methods for output impedance matching in switched mode circuits
WO2004064249A3 (en) Cathode-coupled pentode valve amplifier with servo offset controlled push-pull output stage
CN108631737A (en) Differential amplifier circuit
US9118280B2 (en) High voltage wide bandwidth amplifier