Push Pull Amplifier Circuit, Operation, Advantages and Disadvantages

Push pull amplifier image

A push-pull amplifier is a type of amplifier that can drive a current in either direction through the load. In terms of distortion and performance, push-pull amplifiers are more efficient than single ended amplifier because of its push-pull arrangement. Into this arrangement, one transistor amplifies the positive half cycle whereas the other transistor amplifies the negative half cycle of the signal i.e. whole signal is amplified at the output. The output stage of a typical push-pull amplifier comprises of two identical BJT’s or Mosfet’s i.e one source current through the load while another sink current from the load. In our previous articles, we explain Read More …

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

class a power amplifiers image

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

Power amplifier image

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 …