Operational Amplifier

 Operational Amplifiers

Operational amplifiers are the basic building blocks of any analog electronic circuit. They are linear devices with all properties of a DC amplifier. The ideal Op Amps shown in the figure has three important terminals in addition to other terminals. These input terminals are inverting input and Non-inverting input. The third terminal in an op-amp is output which can sink and source current and voltage. The output signal is the amplifiers gain multiplied by the value of the input signal in op-amp so it works as an amplifier.