Amplifiers are a must-have item for any wireless communications and broadcasting, and in audio equipment of all kinds. Amplifiers also referred as an amp is used to increase the signal of current, voltage and power. The function of the amplifier is by using the power from the power supply and longer altitude, it controls the output signal with the help of input signal. It modulates the out of the power supply is based on the properties of the input signal. The amplifier is a discrete part of the electrical circuit, which is continued with other device.