Question

Which transistor is used in amplifier?

Answer 1

1. The most common n-p-n transistor arrangement, often known as the n-p-n transistor amplifier circuit, is used in most electrical circuits.
2. Here is a voltage divider biasing circuit, also known as a single-stage transistor amplifier.
3. Always remember that the input is forward-biased, whereas the output is reverse-biased, for accurate amplification. As a result, in addition to the signal, we apply DC voltage (VEE) in the input circuit as shown below,

4. Currently, the flow of collector current through a ${\mathrm{R}}_L$(Load resistance) produces a massive voltage across it. As a result, the applied weak signal at the input circuit will be amplified at the collector circuit in the output. The transistor acts as an amplifier in this method.