Amplifier Circuit Diagram using STK4036 50W IC

Introduction

A 50W amplifier circuit diagram using STK4036 is a cost-effective and efficient solution for audio enthusiasts seeking to enhance their sound system‘s output power. This integrated circuit (IC) is specifically designed to amplify audio signals and deliver remarkable sound quality. In this article, we will explore the specifications and features of the STK4036 IC and discuss the circuit diagram and components needed to construct a powerful 50W amplifier.

Specification of STK4036 IC

The STK4036 IC is a hybrid power amplifier module developed by Sanyo, which integrates multiple components and circuitry onto a single chip. It offers a host of impressive specifications and features that make it ideal for audio amplification applications. Here are the key specifications of the STK4036 IC:

Power Output: The STK4036 is capable of delivering an audio output power of 50W, allowing for a significant boost in sound intensity.
Frequency Response: It boasts a frequency range of 20Hz to 50kHz, ensuring the faithful reproduction of audio signals across the entire audible spectrum.
Total Harmonic Distortion (THD): The THD of the STK4036 is exceptionally low, typically less than 0.08%. This ensures minimal distortion and preserves the original audio quality.
Input Sensitivity: The IC can handle audio signals with sensitivity levels ranging from 0.5V to 2.0V, providing flexibility for various audio input sources.
Load Impedance: The recommended load impedance for the STK4036 is 8 ohms, enabling the efficient power transfer to connected speakers.
Thermal Protection: This IC features built-in thermal shut-off protection, safeguarding it against overheating and potential damage.
Supply Voltage: The maximum supply voltage is +/-52V but the recommended voltage is +/-36.5V.

Amplifier Circuit Diagram using STK4036

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

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STK4036 IC

Components List of Amplifier Circuit Diagram using STK4036

Following is the list of all components used in this project:

STK4036 IC x 1
100uF Capacitor x 3
10uF Capacitor x 2
4.7uF Capacitor x 1
1uF Capacitor x 1
0.1uF Capacitor x 1
470pF Capacitor x 1
100pF (101J) Capacitor x 2
1000pF (102J) Capacitor x 2
1k Resister x 2
56k Resister x 2
560 ohms Resister x 1
10k Resister x 1
100 ohms Resister x 2
4.7k Resister x 1

Working Explanation of Amplifier Circuit Diagram using STK4036

To construct a 50W amplifier using the STK4036 IC, several components are required, including resistors, capacitors, transistors, and a power supply. The circuit diagram consists of input and output stages, along with voltage regulation components.

The input stage processes the audio signal through a preamplifier, which boosts the weak audio input to a suitable level for the power amplifier stage. The power amplifier stage, implemented using the STK4036 IC, amplifies the pre-amplified audio signal to produce a powerful 50W output.

To ensure the stability and longevity of the circuit, a voltage regulator is employed to provide a steady and regulated power supply to the IC. This prevents voltage fluctuations and protects the amplifier from damage. Additional components, such as capacitors and resistors, are integrated into the circuit to optimize performance and minimize noise.

Conclusion

The 50W amplifier circuit using the STK4036 IC provides an excellent solution for individuals looking to enhance their audio systems’ power output. With its impressive specifications, such as 50W power output, low THD, and wide frequency response, this integrated circuit guarantees exceptional audio quality. By following the circuit diagram and using the recommended components, audio enthusiasts can easily construct a powerful amplifier that delivers remarkable sound performance. Embracing the STK4036 IC in your audio setup will undoubtedly elevate the sonic experience, allowing you to immerse yourself in the world of high-quality sound.

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