Class A Power Amplifier Theory, Efficiency equation, Advantages and Disadvantages

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Class A power amplifier is one of the simplest types of power amplifier have high fidelity and totally immune to crossover distortion. In the standard common emitter circuit configuration, class A amplifier uses the switching transistor.  The transistor is always turned ON so that the output current flows for the entire cycle of the input waveform. To control the high load current, class A amplifier may use a single power transistor or a pair of a transistor connected together. In our previous article, we explain power amplifier circuit,  semiconductors, diodes, rectifiers in detail. Here we are going to explain Class A Read More …

Power Amplifier Circuit, Classes and its Characteristics

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A Power amplifier is a type of amplifier used to increase the amplitude of the signal and makes it stronger than the given input signal. It  is the most demandable electronic device in the eyes of professional because it comes in various forms and used in a number of circuits. The main operating characteristics of an ideal amplifier is power output, signal gain, efficiency and linearity but normally there is always remain some trade-off between these characteristics. As we know not all amplifiers provide an accurate output, and there is always cost factor to consider. In our previous article, we Read More …

Power Amplifier Definition, Properties and Classifications

Power amplifers

A Power amplifier is an electronic device which provides sufficient power to an output load to drive a speaker or other power device, typically a few watts to tens of watts. The main purpose of this amplifier is to raise the power level of the input signal, to get the large power at the output. To match the input signal shape with larger amplitude, power amplifier takes the energy from the power supply & controls the output. In our previous article, we explain Amplifiers, Transistors, diodes, rectifiers in detail. In this article, we are going to explain Power amplifier working, performance Read More …

Amplifiers Theory, Block diagram, Gain, Types and Comparison

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An amplifier is an electronic device used to boost up the strength of the weak signal. To match the input signal shape with larger amplitude, an amplifier takes the energy from the power supply and controls the output. It can either be a separate piece of equipment or an electrical circuit within another device. In our previous tutorials, we explain oscillators, transistors, semiconductors, diodes in detail. Here we are going to explain Amplifiers, amplifiers work, types etc in detail. Amplifier Theory: Amplifiers are one of the most used circuits in electronics, performs a variety of functions in a great way. Read More …