Question

What are the advantages of the differential amplifier?

Answer 1

Differential Amplifier:-

1. The differential amplifier circuit increases the signal difference between input signals.
2. The final output voltage is calculated by adding the two output voltages after calculating the output voltage arising from each input voltage using superposition.

Applications: -

1. By utilizing an differential amplifier, it serves as a series negative feedback circuit.
2. Typically, a differential amplifier serving as a volume control circuit is used.
3. The differential operational amplifier can be utilized as a gain control circuit that operates automatically.
4. For amplitude modulation, some differential operational amplifiers can be utilized.

Below is a schematic diagram of the differential amplifier: -

Figure 01:- A Differential Amplifier

Advantages: -

1. It is used for its noise cancellation property.
2. The external interference can be reduced with the help of a differential amplifier.
3. The nature of the differential amplifier is linear.
4. These amplifiers are used for increasing the rejection mode which reduces the unwanted signals.