1000W MOSFET Amplifier Circuit using IRFP260

Introduction

In the world of audio amplification, power and efficiency are key factors that determine the quality of the sound produced. MOSFET amplifiers have gained significant popularity due to their ability to deliver high power outputs with low distortion. In this article, we will explore a 1000W MOSFET amplifier circuit diagram that utilizes 6 pairs of IRFP260 MOSFET transistors in the output section, along with a range of other transistors such as MJE15034, MJE15035, MJE340, MJE350, IRF510, 2N5401, MPSA92 and 2N5551 in the driver and preamplifier sections.

The IRFP260 MOSFET is a crucial component in this 1000W MOSFET amplifier circuit, therefore let us begin by discussing its specifications in detail.

IRFP260 MOSFET Specifications

Power Dissipation: 300W
Drain-Source Voltage (Vds): 200V
Continuous Drain Current (Id): 50A
Gate-Source Voltage (Vgs): ±20V
Input Capacitance (Ciss): 2070pF
Output Capacitance (Coss): 730pF
Reverse Transfer Capacitance (Crss): 590pF
On-Resistance (Rds): 0.04Ω
Total Gate Charge (Qg): 145nC
Gate-Source Threshold Voltage (Vgs(th)): 2-4V
Body Diode Reverse Recovery Time (trr): 67ns

This powerful MOSFETs are capable of handling high power and current, making it ideal for the output section of the 1000W amplifier circuit. With its low on-resistance and fast switching characteristics, it ensures efficient power delivery and reduced distortion.

MOSFET Amplifier Circuit Diagram using IRFP260

This project can be built using a 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 1000W MOSFET Amplifier Circuit using IRFP260

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

IRFP260 MOSFET x 12
MJE15034 Transistor x 1
MJE15035 Transistor x 1
MJE340 Transistor x 1
MJE350 Transistor x 1
IRF510 MOSFET x 1
2N5401 Transistor x 2
MPSA92 Transistor x 2
2N5551 Transistor x 2
1N4007 Diode x 3
12V Zener Diode x 2

Explanation of 1000W MOSFET Amplifier Circuit using IRFP260

Now let’s dive into the circuit diagram and explore the other transistors involved in the driver and preamplifier sections of this 1000W MOSFET amplifier circuit using IRFP260.

The driver stage of the amplifier circuit utilizes transistors MJE15034 and MJE15035, which are capable of delivering high voltage gain and current amplification. These transistors work in conjunction to amplify the weak input signal received from the preamplifier section.

Speaking of the preamplifier section, it incorporates transistors MJE340, MJE350, IRF510, 2N5401, MPSA92, and 2N5551. These transistors play a crucial role in enhancing the low-level audio signals coming from the audio source. They collectively amplify, shape, and amplify the incoming audio signals to a level suitable for the driver stage to further amplify and drive the IRFP260 MOSFET transistors in the output stage.

Conclusion

The 1000W MOSFET amplifier circuit diagram discussed in this article incorporates 6 pairs of IRFP260 MOSFET transistors in the output section, along with a range of other transistors in the driver and preamplifier sections. This circuit provides a high-power output with low distortion, thanks to the efficient characteristics of the IRFP260 MOSFETs. The driver and preamplifier sections, comprised of various transistors, work together to amplify and shape the incoming audio signals before driving the power transistors. Overall, this amplifier circuit promises to deliver superior audio performance, making it an excellent choice for audiophiles and professionals alike.

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