Question

What Is Amplifier?

Answer 1

1. An amplifier is a device used for the amplification of the signals, it improves the strength of the signal without altering the shape of the signal.
2. An amplifier is a part of the circuit that increases the input signal strength.
3. An amplifier is used to increase the amplitude of a signal waveform, without changing other parameters of the waveform such as frequency or wave shape.
4. There are many forms of electronic circuits classed as amplifiers, from Operational Amplifiers and Small Signal Amplifiers up to Large Signal and Power Amplifiers.
5. The classification of an amplifier depends on the size of the signal, large or small, its physical configuration and how it processes the input signal that is the relationship between input signal and the current flowing in the load.