200W MOSFET Audio Amplifier Circuit Diagram

Introduction

An audio amplifier circuit is essential when it comes to enhancing the sound quality of your audio system. In this article, we will discuss a 200W MOSFET audio amplifier circuit diagram that utilizes a range of MOSFETs for optimum performance. The MOSFETs employed in the output section include 2SK1057, 2SK134, 2SJ161, and 2SJ49, while the driver and preamplifier section features 2SB716, 2SD756, and 2SA872. This circuit promises to deliver high-quality audio output with exceptional precision and clarity, making it an excellent choice for audio enthusiasts seeking superior performance.

Specifications of MOSFETs Used:

1. 2SK1057:
   • Maximum Drain-Source Voltage (Vds): 160V
   • Maximum Drain Current (Id): 10A
   • Power Dissipation (Pd): 80W
   • Gate-Source Cutoff Voltage (Vgs off): ±30V
2. 2SK134:
   • Maximum Drain-Source Voltage (Vds): 60V
   • Maximum Drain Current (Id): 1.5A
   • Power Dissipation (Pd): 25W
   • Gate-Source Cutoff Voltage (Vgs off): ±20V
3. 2SJ161:
   • Maximum Drain-Source Voltage (Vds): 160V
   • Maximum Drain Current (Id): 10A
   • Power Dissipation (Pd): 100W
   • Gate-Source Cutoff Voltage (Vgs off): ±30V
4. 2SJ49:
   • Maximum Drain-Source Voltage (Vds): 60V
   • Maximum Drain Current (Id): 1.5A
   • Power Dissipation (Pd): 25W
   • Gate-Source Cutoff Voltage (Vgs off): ±20V

200W MOSFET Audio Amplifier Circuit Diagram

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

Caution: Website contains information on high voltage circuits. Proceed at your own risk, ensuring proper knowledge and precautionary measures to prevent electric shock or injury.

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Components List of MOSFET Audio Amplifier Circuit Diagram

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

Transistors

• 2SA872 Transistor x 2
• 2SD756 Transistor x 2
• 2SB716 Transistor x 1
• 2SJ49 Transistor x 1
• 2SK134 Transistor x 1
• 2SK1057 Transistor x 1
• 2SJ161 Transistor x 1

Resistors

• 100k Resister x 1
• 47k Resister x 1
• 5.1K Resister x 2
• 62k Resister x 1
• 1k Resister x 1
• 22k Resister x 1
• 12k Resister x 1
• 100Ω Resister x 6
• 0.22Ω/5W Resister x 4
• 4.7K Resister x 1

Capacitors

• 1uF Capacitor x 1
• 30pF Capacitor x 1
• 100uF Capacitor x 3
• 15pF Capacitor x 1
• 6.8nF (682J) Capacitor x 1
• 220nF (224J) Capacitor x 3

Miscellaneous

• 1N4148 Diode x 3
• 1uH Coil x 1
• 8Ω Speaker
• ±63V Power Supply

Explanation of MOSFET Audio Amplifier Circuit Diagram

With its impressive specifications and careful selection of components, this audio amplifier circuit promises to deliver a high-quality audio experience, making it a perfect choice for audio enthusiasts who seek exceptional sound quality. So, if you are looking to enhance the performance of your audio system, consider implementing this 200W MOSFET audio amplifier circuit for outstanding results.

Conclusion

The 200W MOSFET audio amplifier circuit diagram described in this article demonstrates the application of various MOSFETs to achieve exceptional audio performance. The 2SK1057, 2SK134, 2SJ161, and 2SJ49 MOSFETs used in the output section ensure efficient power handling and high fidelity sound reproduction. The driver and preamplifier section, comprising 2SB716, 2SD756, and 2SA872, compliments the output section by delivering precise control and amplification of the audio signal.

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