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Practical power amplifier stages and block diagram. …
https://www.circuitstoday.com/practical-power-amplifier-stages-and-block-diagram
Power amplifier stages in a real circuit. Circuit diagram of a three stage practical audio power amplifier is shown in the figure below. Small signal transistor Q1 and its associated components form the voltage amplification stage. R1 and R2 are biasing resistors of Q1. C4 is the input coupling capacitor which blocks DC components from the ...
Power Amplifiers - Tutorialspoint
https://www.tutorialspoint.com/amplifiers/power_amplifiers.htm
Power Amplifier. The function of a power amplifier is to raise the power level of input signal. It is required to deliver a large amount of power and has to handle large current. The characteristics of a power amplifier are as follows −. The base of transistor is made thicken to handle large currents. The value of β being (β > 100) high.
Amplifiers: Output stage - Lenard Audio
https://education.lenardaudio.com/en/12_amps_5.html
Lateral Power MOS-FETs were developed for audio amplifiers during the 1990s. The primary disadvantage of FETs is that they deliver less power than a Bi-polar transistor amp using the same supply voltage. They are expensive, difficult to manufacture and only a few companies supply them. Less amplifier manufacturers use power MOS-FETs.
Fast Voltage Amplifier Stages for Audio Power Amplifiers
http://hifisonix.com/anti-saturation-diodes/
Fast Voltage Amplifier Stages for Audio Power Amplifiers. Here is a quick look at some of the problems that can occur when the VAS (aka TIS) in an audio amplifier is driven into saturation without considering the effects of base charge storage – a phenomena all bipolar transistor suffer from.
Distortion in power amplifiers, Part IV: the power ...
https://www.edn.com/distortion-in-power-amplifiers-part-iv-the-power-amplifier-stages/
Distortion in power amplifiers, Part IV: the power amplifier stages. [ Part 1 offers an overview and introduction to the sources of distortion in power amplifiers. Part 2 focuses on distortion in the audio amplifier input stage. Part 3 examines distortion mechanisms in the voltage amplifier stage (VAS) of audio power amplfiers.]
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