Question

In which of the following are operational amplifiers (op-amps) used?

• A. Oscillators
• B. Filters
• C. Instrumentation circuits
• D. All of the above

Answer 1

The correct option is D All of the above

1.The oscillator circuits consists of a negative gain op-amp and a three section $RC$ network that produced the ${180}^o$phase shift.The phase shift network is connected from op-amp output back to its inverting input.

2. Op-amp can be used in active filters as a active components.

3. Instrumentation amplifiers is a type of differential amplifiers that has been outfitted with input buffers amplifiers.so, op-amp are used in instrumentational circuits.

Therefore,op-amp can be used as a oscillators,filters and instrumentation circuits.