Stereo Amplifier Single Supply Circuit Diagram

Introduction

A low-distortion Stereo Amplifier Single Supply using a single LM1877 stereo IC is a popular choice for audio enthusiasts looking for a high-quality audio amplifier that is easy to assemble and highly reliable. This circuit can drive 8-ohm speakers and is designed to work on a typical single power supply voltage.

The LM1877 is a dual audio amplifier IC manufactured by National Semiconductor. It is specifically designed for high-quality audio applications and has a wide dynamic range with very low distortion. The LM1877 can deliver up to 1 watt of power to each channel and is housed in an 8-pin mini-DIP package, making it easy to integrate into a circuit.

The low distortion stereo amplifier circuit using a single LM1877 stereo IC requires very few components and is easy to assemble. The circuit diagram consists of two LM1877 ICs connected in a stereo configuration. Each IC is connected to an 8-ohm speaker and a single power supply. The capacitors and resistors are used to stabilize the circuit and to filter the input and output signals to reduce noise and distortion.

Circuit Diagram

of Stereo Amplifier Single Supply

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The power supply for the circuit can be a typical single supply voltage with a range between 8V and 16V. The LM1877 ICs can operate with a wide supply voltage range, making this circuit very versatile. It is recommended to use a regulated power supply to ensure stable operation and to reduce noise and distortion.

Working Explanation

of Stereo Amplifier Single Supply

When assembling the circuit, it is important to take care when soldering the components to ensure proper connections. The ICs should be mounted on heat sinks to dissipate any heat generated during operation. Proper grounding of the circuit is also important to reduce noise and distortion.

Once the circuit is assembled, it can be tested using an audio source such as a smartphone, tablet or computer. The input signal should be connected to the input jack of the circuit, and the output should be connected to the speakers. The volume can be adjusted using the potentiometers, and the sound quality can be evaluated.

The low-distortion stereo amplifier circuit using a single LM1877 stereo IC provides high-quality audio with very low distortion. The circuit is easy to assemble and is highly reliable. It can be used in a variety of audio applications such as home audio, music systems, and audio production.

The LM1877 IC has a built-in thermal protection circuit that shuts down the amplifier if the temperature rises above the safe operating range. This feature helps to protect the ICs from damage and ensures long-term reliability.

Conclusion

In conclusion, the low distortion stereo amplifier using a single LM1877 stereo IC is a reliable and efficient audio amplifier circuit. It is easy to assemble and is suitable for a wide range of audio applications. With careful assembly and proper grounding, this circuit can provide high-quality audio with very low distortion.