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Operational Amplifier (op-amp):types ,applications,modes & parameters

What is  Operational Amplifiers: Early operational amplifiers (op-amps) were used primarily to perform mathematical operations such as addition, subtraction, integration, and differentiation—thus the term operational. These early devices were constructed with vacuum tubes and worked with high voltages. Today’s op-amps are linear integrated circuits (IC s) that  use relatively low dc supply voltages and are reliable and inexpensive. The standard operational amplifier (op-amp) symbol ...

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