Introduction
Audio amplifiers that amplify the audio signals are widely used in the electronic industry. One of the great applications of audio amplifiers is in the automotive industry. For example, vehicles like cars, etc use the audio amplifier to boost the audio signal. Also, it amplifies the signal generated by the head. So, In this article, we are going to make Car Audio Amplifier using TDA2003.
The circuit uses the integrated radio amplifier TDA2003. The IC is greatly reasonable and inexpensive. Moreover, it provides short-circuit protection. And, have low crossover distortion. To make the circuit, remember to use a good-quality board. Also, use the heat sinks as the IC dissipates some heat. The circuit can also be operated by a 12V DC power supply.
Hardware Required
| S.no | Component | Value | Qty |
|---|---|---|---|
| 1. | PCB Board | – | 1 |
| 2. | IC | TDA2003 | 2 |
| 3. | Capacitor | 10uf, 470uf, 100uf, 1000uf, 39nf, 100nf | 2, 2, 2, 2, 2, 4, |
| 4. | Resistor | 1ohm, 2.2 ohm, 39 ohm, 220 ohm | 2, 2, 2 2 |
| 5. | Speaker | – | 2 |
| 6. | Switch | – | 1 |
| 7. | 2A fuse | – | 1 |
Pinout TDA2003
Circuit Diagram
Working Explanation
The Car Audio Amplifier uses the IC TDA2003. For the DC input decoupling, it has a capacitor C7. Capacitors C1 and C2 are there for power supply filtering. Capacitor C4 and resistor R4 are used to prevent oscillation. Capacitor C3 and resistor R1 are there for upper cut off frequency. And, capacitor C5 is the coupling capacitor for the load.
Application and Uses
This circuit is mainly for cars and vehicles. But with some modification, it can be used in:
- Public address systems.
- Home theatre systems.
- Guitar circuits, etc.
