The input coupling transformer is so arranged that one signal in applied to the input of one transistor and the other signal is applied to the input of the other transistor. Generally this splitting is done using an input coupling transformer. The basic operation of a push pull amplifier is as follows: The signal to be amplified is first split into two identical signals 180° out of phase. Push pull amplifiers are commonly used in situations where low distortion, high efficiency and high output power are required. A single ended amplifier, how well it may be designed will surely introduce some distortion due to the non linearity of its dynamic transfer characteristics. Push pull amplifiers are superior over single ended amplifiers (using a single transistor at the output for driving the load) in terms of distortion and performance. The output stage of a typical push pull amplifier consists of of two identical BJTs or MOSFETs one sourcing current through the load while the other one sinking the current from the load. We’ve also demonstrated different types of push pull amplifiers, like Class A, Class B and Class AB push pull amplifier models.Ī push pull amplifier is an amplifier which has an output stage that can drive a current in either direction through through the load. We’ve covered theory and applications behind a push pull amplifier. In this guide, let’s learn in detail about Push Pull Amplifiers.
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