Traditional Culture Encyclopedia - Traditional culture - The difference between operational amplifier and power amplifier

The difference between operational amplifier and power amplifier

First, refer to different

1, operational amplifier: short for operational amplifier. In practical circuits, it usually forms a functional module together with the feedback network.

2. Power amplifier: refers to one of the most basic devices in the sound system, commonly known as "amplifier".

Second, the characteristics are different.

1, operational amplifier: a circuit unit named from the functional point of view, which can be realized by discrete devices or in semiconductor chips.

2. Power amplifier: it amplifies the weak electric signal sent by the signal source (mixer in professional sound system) and drives the speaker to make sound.

Third, the roles are different.

1, operational amplifier: With the development of semiconductor technology, most operational amplifiers exist in the form of a single chip. There are many kinds of operational amplifiers now, which are widely used in almost all industries.

2. Power amplifier: The main function is to amplify the weak signal input by the sound source equipment, and then generate enough current to push the speaker to play back the sound.

Baidu encyclopedia-power amplifier

Baidu encyclopedia-operational amplifier