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Operational Amplifier
SUBJECT : Electronic Devices and Circuits
AUTHOR : Palanisamy P K
PUBLISHED ON : 27/05/15
NUMBER OF PAGES : ( 41 Pages)
PRICE : Rs 14.35

The operational amplifier, most commonly referred, as ‘op-amp’ was introduced in 1940s. The first operational amplifier was designed in 1948 using vacuum tubes. In those days, it was used in the analog computers to perform a variety of mathematical operations such as addition, subtraction, and multiplication etc, hence the name operation amplifier. Due to the use of vacuum tubes, the early op-amps were bulky, power consuming and expensive. But the IC op-amps are inexpensive occupy less space and consume less power. The IC op amp has become an integral part of almost every electronic circuit. Op-amps are used in the fields of process control, communications, computers, and measuring systems. The op amp is basically an excellent high gain dc amplifier.

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