LM378 Amplifier Low Distortion Circuit - Tronicspro

Introduction

When it comes to amplifiers, a low distortion one is desired as it ensures the sound quality is not compromised. A Low Distortion 15 Watt Mono Amplifier using NSP5191 NPN, NSP5194 PNP transistors, and LM378 IC with 4 Ohms speakers is a great choice for those who want to enjoy high-quality sound without any distortion.

The circuit diagram of this amplifier consists of both the NPN and PNP bipolar transistors, which work together to ensure a low distortion ratio. The LM378 IC acts as the voltage regulator, providing a stable output voltage to the amplifier. This ensures that the sound quality does not suffer due to fluctuations in the input voltage.

Circuit Diagram

of LM378 Amplifier Low Distortion

More Circuit Layouts

**LA4440 Amplifier, Tone Control & MP3**

Bass Tone Control Circuit Diagram — **LA4440 Amplifier, Tone Control & MP3**

**Variable Power Supply 0-30V_10A Circuit Diagram**

Stereo Amplifier TDA7297 Dual-Bridge Circuit Diagram — **Variable Power Supply 0-30V_10A Circuit Diagram**

Components List

of LM378 Amplifier Low Distortion

LM378 IC x 1
NSP5191 Transistor x 1
NSP5194 Transistor x 1
0.47uf Capacitor x 1
300uf Capacitor x 1
5uf Capacitor x 1
1000uf Capacitor x 1
82 Capacitor x 1
2k Resister x 1
100k Resister x 2
5 ohm Resister x 1
4 ohms Speaker

Working Explanation

of LM378 Amplifier Low Distortion

The values of the resistors and capacitors used in the circuit have been carefully selected to ensure that the amplifier’s performance is optimized. They ensure that the bias current in the transistors is maintained at a level that ensures optimum amplification without introducing any distortion.

The amplifier circuit is powered by a +12 V power supply, which is regulated by the LM378 IC to provide a stable and clean output voltage. This gives the amplifier circuit a stable power supply and ensures that there are no fluctuations in the output voltage due to variations in the input voltage.

The low distortion performance of this amplifier is especially beneficial when it is used with 4 Ohms speakers. These speakers are known to be more sensitive to distortion, and this amplifier is designed to ensure that the distortion ratio is kept to a minimum. The result is a great sound quality that is true to the original audio source.

More projects, You may like:

Conclusion

Overall, the Low Distortion 15 Watt Mono Amplifier using NSP5191 NPN, NSP5194 PNP transistors, and LM378 IC with 4 Ohms speakers is a great amplifier circuit for those who want to enjoy high-quality audio without any distortion. The careful selection of resistors and capacitors ensures that the amplifier performance is optimized, and the LM378 IC provides a stable and clean output voltage. This amplifier circuit is easy to build and can be a great addition to audio systems for home or office use.