To increase the input power of any circuits the term “amplifiers” is highly used. Simply, Amplifiers are the circuits that increase the power signal. Hence, audio amplifiers are those which increase the audio signal. For instance, take an example of a microphone and speaker, their circuits include the amplifiers to raise the input human voice signal. But, not every audio amplifier is powerful enough to look at all the factors and gives the perfect increased output.
For example. the issue of noise is considered a major problem, as the large output signals, and reduction of the noise is also the biggest task for stereo audio amplifiers. Thus, in this article, we will make Stereo Audio Amplifier 5W Circuit using TEA2025 IC.
Hardware Components
The following components are required to make Stereo Audio Amplifier Circuit
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | Polarized Capacitor | 100µF | 6 |
| 2. | Resistor | 10K | 1 |
| 3. | Ceramic Capacitor | 0.22µF, 0.15µF | 1, 2 |
| 4. | Speaker | 4-8 Ohm | 2 |
| 5. | Amplifier chip IC | TEA2025 | 1 |
TEA2025 Pinout
For a detailed description of pinout, dimension features, and specifications download the datasheet of TEA2025
Stereo Audio Amplifier Circuit
Working Explanation
In this circuit of the Stereo Audio Amplifier, the Vcc is given to Pin 16 of the TEA2025 IC, while pins 4, 5, 9, 13, and 12 remain grounded. The IC has two input pins, that is pin 7 and pin 10. But since we only have one input, therefore we grounded pin 7 and give the input at pin 10 of the IC, the potentiometer is also wired with that pin. Pin 3 1nd 14 are the boots pin. Hence the output is coming from output pins 2 and 15 which drives the load, that is the speaker.
Applications and Uses
- The circuit can get utilized in Public addressing systems.
- Also, in Theatrical sound systems.
- Moreover, in-home theatre systems, etc
- Radio wave transmitters can also adopt the circuit for their use.
- Furthermore, it can be utilized in hi-fi electronic gadgets and devices.
- In this new technology era, robotics applications can also use this circuit.
- Further, home audio systems can use this circuit.
- It can be used in electronic instruments like electronic keyboards and guitars.
- It can also be utilized in sound systems for various events.
- The circuit can be adopted in children’s gadgets and toys, etc.
