Operational amplifiers are the electronic components which are available as an integrated circuit (IC) and are widely employed in many electrical and electronic components. The name operational is given to these components because, in the beginning, they were used to perform addition, subtraction, and integration to different electrical signals.
Today Electrical Engineering shares free book on Operational Amplifiers. This 60 pages (approx) chapter on Book contains concept developing basic knowledge that is important for everyone in electrical and electronics field. The theoretical concepts are equally important for those who are preparing for electronic jobs, competitive exams.