Q2 (i) (ii) With the aid of sketches of input and output waveforms explain what is meant by an inverting amplifier a non-inverting amplifier a) b) Figure 2.1 shows the circuit of a non-inverting amplifier. What is the purpose of the two resistors Rf and R1? INPUT +15 V -15 V R, 220 ΚΩ R₁ Figure 2.1 OUTPUT OV

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Q: 3.1

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Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.