400W MOSFET Amplifier Circuit Diagram using IRFP240

Introduction

In the world of audio amplifiers, there is a constant pursuit of higher power output and superior sound quality. One such amplifier circuit that has gained popularity is the 400W MOSFET Amplifier Circuit Diagram using IRFP240 MOSFETs in the output section, MJE15034 & MJE15035 transistors, IRF510 MOSFET in the driver section, and a pair of MPSA92 transistors in the preamplifier section. This article explores the working of this amplifier circuit and highlights the specifications of each component used.

Specifications of the Transistors:

1. IRFP240 MOSFET:

• Drain-to-Source Voltage: 200V
• Continuous Drain Current: 20A
• On-Resistance: 0.14 Ω
• Power Dissipation: 150W
• Package Type: TO-247

2. MJE15034 Transistor:

• Collector Current: 8A
• Collector-Emitter Voltage: 250V
• DC Current Gain: 25-100
• Power Dissipation: 40W
• Package Type: TO-220

3. MJE15035 Transistor:

• Collector Current: 8A
• Collector-Emitter Voltage: 250V
• DC Current Gain: 25-100
• Power Dissipation: 40W
• Package Type: TO-220

4. MPSA92 Transistor:

• Collector-Emitter Voltage: 300V
• Collector Current: 500mA
• DC Current Gain: 40-160
• Power Dissipation: 625mW
• Package Type: TO-92

400W MOSFET Amplifier Circuit Diagram using IRFP240

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 400W MOSFET Amplifier Circuit using IRFP240

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

• IRFP240 MOSFET x 8
• IRF510 MOSFET x 1
• MJE15034 Transistor x 1
• MJE15035 Transistor x 1
• MPSA92 Transistor x 2
• 12V Zener Diode x 2
• 1N4007 Diode x 3

Explanation of 400W MOSFET Amplifier Circuit using IRFP240

The 400W MOSFET amplifier circuit is designed to deliver exceptional power output while maintaining low distortion levels. This circuit utilizes high-quality components to ensure reliability and superior audio performance. Let’s take a closer look at the different sections of this amplifier circuit.

The output section of this amplifier circuit features IRFP240 MOSFETs. The IRFP240 is a power MOSFET that combines high voltage capability with low on-resistance. With a maximum drain-to-source voltage of 200V and a continuous drain current of 20A, the IRFP240 provides excellent power handling capacity. This makes it ideal for high-power audio amplifiers.

Moving on to the driver section, the MJE15034 and MJE15035 transistors are utilized. These are high voltage, high-speed transistors designed for audio amplifier applications. With a collector current of 8A and a collector-emitter voltage of 250V, these transistors provide ample power and voltage handling capabilities.

In the preamplifier section, a pair of MPSA92 transistors are employed. The MPSA92 is a high voltage PNP transistor with a maximum collector-emitter voltage of 300V. It is commonly used in audio amplifier circuits due to its low noise and high current gain characteristics.

Conclusion

The 400W MOSFET Amplifier Circuit Diagram using IRFP240 MOSFETs, MJE15034, MJE15035 transistors and a pair of MPSA92 transistors, is a powerful and efficient audio amplifier circuit. It combines high-quality components with a well-designed circuit layout to deliver exceptional sound quality and power output. Whether you are a music enthusiast or a professional audio engineer, this amplifier circuit is sure to meet your requirements.

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