As we all know, a microphone and speaker are required devices for public speaking engagements and theatrical productions. At certain events, we use microphones to amplify human voices, while at others, speakers just play music from any music player or mobile phone. We incorporate amplifiers in the systems to amplify audio signals from any device. Amplifiers, in other words, amplify low-power electrical audio signals at the output. So, in this tutorial, we'll learn How To Make Audio Amplifier 12V Using TDA2030.

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Hardware Required

Circuit Diagram

Working Explanation

The functioning of this Audio Amplifier 12V Using TDA2030 is actually fairly easy. First, we'll provide a 12V DC power source. When an audio input device, such as a smartphone or a microphone, is utilized, It then sent the audio input through a 2.2uF coupling capacitor. A coupling capacitor effectively blocks the DC component of the input signal, allowing only AC to get through.

There is a feedback resistor R4 resistor that is linked between pins 2 and 4 to get the gain. This circuit will not function properly if this resistor is not installed correctly.R1 and C2  are connected in series. Pin 3 of the IC is grounded, while pin 2 is used to hold back disturbances in the audio stream.