Basics: An operational amplifier is a DC-coupled high-gain electronic voltage amplifier with a differential input and usually a single-ended output.
High performance op amp integrated circuits still offer excellent value for money, but obviously cost a little more
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Basic inverting circuit
Basic non-inverting op-amp circuit
formula: Vout=((R2/R1)+1)*Vin
*Before we use the operational amplifier we have to calculate the circuit and find the datasheet of the op amp.
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