100W Bridge Amplifier TDA7295 Circuit Diagram

Introduction

In the world of audio amplification, 100W Bridge Amplifier using TDA7295 IC has been a popular choice for music enthusiasts. This amplifier has the capability to deliver high-quality audio output, making it perfect for various applications such as home theatre systems, car audio, and other audio systems.

The TDA7295 IC is a Class AB audio power amplifier that is specifically designed for high-end audio equipment. It features a unique sound signature that is remarkably clear and precise, thanks to its accurate distortion reduction mechanism. Additionally, it has a highly advanced design that helps in reducing internal heat and ensures the longevity of the device.

In this article, we will discuss the 100W Bridge Amplifier using TDA7295 IC and why the value of the load should not be lower than 8 ohms for dissipation and current capability reasons. We will also talk about the maximum power supply voltage requirement and how it affects the performance of the amplifier.

Circuit Diagram

of 100W Bridge Amplifier TDA7295

This amplifier can be designed using a few basic components. The circuit diagram of this project is shown below.

**100W Bridge Amplifier TDA7295 Circuit Diagram**

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Why the value of the load should not be lower than 8 ohms?

The TDA7295 IC has been designed to work optimally with a load impedance of 8 ohms. This value is crucial for the proper functioning of the amplifier, and it should not be lower than 8 ohms for dissipation and current capability reasons.

When an amplifier is connected to a load impedance that is lower than the recommended value, it draws more current from the power supply, leading to higher heat dissipation levels. As the internal heat increases, the amplifier starts to operate outside its safe limits, which can result in damage to the device.

Additionally, a load impedance that is lower than 8 ohms can create instability in the amplifier’s output stage, leading to waveform distortion and other audio artifacts. This can adversely affect the quality of the audio output, causing unwanted noise, distortion, and clipping.

Power Supply Voltage Requirement:

The recommended maximum power supply voltage for the 100W Bridge Amplifier using TDA7295 IC is ± 22v for Rl 8 ohms and ±30v for Rl 16 ohms load. This means that the voltage applied to the amplifier’s power supply should not exceed 30 volts. Exceeding this limit can result in damage to the device, or worse yet, create a safety hazard.

When the power supply voltage is too high, the amplifier draws more current than its maximum capability, leading to a significant increase in heat dissipation. This can cause the device to malfunction or even become a fire hazard if left unchecked.

On the other hand, if the power supply voltage is too low, the amplifier may not be able to reach its full potential, impairing its performance. With less power being supplied, the output becomes weak, affecting the overall audio quality of the system.

Conclusion of 100W Bridge Amplifier TDA7295

In summary, the 100W Bridge Amplifier using TDA7295 IC is a remarkable audio device that delivers high-quality sound output. The load impedance for the amplifier should not be lower than 8 ohms for dissipation and current capability reasons. Additionally, the maximum power supply voltage should be kept within ± 30v to ensure the amplifier operates safely and efficiently. These critical parameters should be given careful consideration to optimize the amplifier’s performance and enjoy the best audio experience.