Basic Audio Amplifier Circuit Explained - Wiring Draw And Schematic

An audio amplifier is the backbone of any sound system. It is the part of the sound system that increases the level of the audio signal so that it can be heard clearly and loud enough for everyone to enjoy. In this article, we will explain the basic audio amplifier circuit and its components in greater detail.

A basic audio amplifier circuit includes an amplifier, a power supply, and input and output jacks. The amplifier is what actually increases the level of the audio signal. This is done by taking the original low-level signal and boosting it to a much higher level. The power supply provides power to the amplifier, while the input and output jacks provide connection points where the audio signal is fed into the amplifier and out of the amplifier.

The amplifier itself consists of several components. The first component is the preamplifier, which takes the low-level input and amplifies it to a higher level. This preamp stage is usually adjustable so that the user can adjust the level of amplification as desired.

The second component is the power amplifier, which takes the preamplified signal and further amplifies it to the desired level. This is the stage where the power levels are increased from a low voltage to the desired output voltage. The power amplifier is usually a transistor amplifier or an integrated circuit (IC) amplifier.

The third component is the output stage, which is responsible for providing the output signal. This is usually done by controlling the current flow through the speaker or headphones connected to the output. Some amplifiers have an additional component called the bass boost, which adds extra low-end response to the overall sound.

Finally, the fourth component of the basic audio amplifier circuit is the protection circuit, which is responsible for protecting the amplifier against short circuits and other types of damage. This circuit is usually located near the output stage.

In summary, a basic audio amplifier circuit includes an amplifier, a power supply, and input and output jacks. The amplifier is responsible for increasing the level of the audio signal while the power supply provides power to the amplifier. The preamplifier, power amplifier, output stage, and protection circuit make up the basic audio amplifier circuit.

Small Audio Power Amplifier Using 3 Transistors Deeptronic