500W MOSFET Amplifier Circuit Utilizing SJ162 and SK1058

Overview

The 500W MOSFET Amplifier Circuit Circuit Utilizing SJ162 and SK1058 is a high-power audio amplifier celebrated for its outstanding performance and dependability. This article delves into the circuit diagram of the amplifier, emphasizing the essential components utilized in each section. The output section features 2SK1058 and 2SJ162 MOSFET transistors, while the driver section includes 2N5416 and 2N3440 transistors. Additionally, the preamplifier section showcases 2N5087 and 2N5210 transistors. By comprehending the specifications and characteristics of these transistors, we can gain insight into the design decisions made in this robust amplifier.

Transistor Specifications:

2SK1058:

Maximum Drain-Source Voltage: 160V
Continuous Drain Current: 8A
Total Power Dissipation: 70W
Gate-Source Threshold Voltage: 3V
Drain-Source On-Resistance: 1.5Ω

2SJ162:

Maximum Drain-Source Voltage: 160V
Continuous Drain Current: 8A
Total Power Dissipation: 60W
Gate-Source Threshold Voltage: -3 to -5V
Drain-Source On-Resistance: 1.2Ω

2N5416:

Maximum Collector-Base Voltage: 160V
Maximum Collector Current: 1A
Maximum Power Dissipation: 1.2W
DC Current Gain: 25 to 75
Transition Frequency: 100MHz

2N3440:

Maximum Collector-Base Voltage: 100V
Maximum Collector Current: 1.5A
Maximum Power Dissipation: 1.2W
DC Current Gain: 100 to 300
Transition Frequency: 300MHz

2N5087:

Maximum Collector-Emitter Voltage: 20V
Maximum Collector Current: 50mA
Maximum Power Dissipation: 600mW
DC Current Gain: 160 to 800
Transition Frequency: 100MHz

2N5210:

Maximum Collector-Emitter Voltage: 30V
Maximum Collector Current: 100mA
Maximum Power Dissipation: 500mW
DC Current Gain: 100 to 300
Transition Frequency: 300MHz

500W MOSFET Amplifier Circuit Using SJ162 and SK1058

This project can be constructed with a few essential components. Below is the circuit diagram for this project.

500W MOSFET Amplifier Circuit Utilizing SJ162 and SK1058

63V Power Supply Schematic Diagram

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Overview of the 500W MOSFET Amplifier Circuit Featuring SJ162 and SK1058

The 500W MOSFET Amplifier Circuit B&K Components ST3030 boasts a powerful power output stage capable of delivering up to 500W of crystal-clear and undistorted audio. Central to this stage are 5 pairs of 2SK1058 and 2SJ162 MOSFET transistors, which create a formidable combination that can manage substantial power levels without sacrificing sound quality. These MOSFETs provide exceptional thermal stability, ensuring dependable performance even in challenging conditions. Their low crossover distortion and high gain allow the amplifier to reproduce audio signals with the highest fidelity.

Advancing through the circuit, the driver section employs 2N5416 and 2N3440 transistors. These components serve as intermediaries between the preamplifier stage and the output stage, delivering the essential signal amplification needed to drive the power transistors effectively. The 2N5416 and 2N3440 transistors, recognized for their high gain and low noise properties, enable the amplifier to faithfully reproduce subtle details in the audio signal without adding any unwanted distortion. This leads to a more transparent and immersive listening experience for users.

In the preamplifier section, the 2N5087 and 2N5210 transistors are essential for conditioning the incoming audio signal. These transistors amplify the weak signal from audio sources like CD players, turntables, or musical instruments to a level that is appropriate for further amplification in the driver and output stages. The 2N5087 and 2N5210 transistors provide high current gain, low noise, and low distortion, ensuring that the original audio signal remains unaltered throughout the amplification process.

Conclusion

The 500W MOSFET Amplifier Circuit B&K Components ST3030 features a well-structured circuitry utilizing high-quality transistors in every section. The 2SK1058 and 2SJ162 MOSFET transistors in the output section, along with the 2N5416 and 2N3440 transistors in the driver section, and the 2N5087 and 2N5210 transistors in the preamplifier section, work together seamlessly to provide outstanding audio performance. The meticulous selection of these transistors, based on their specific specifications and characteristics, guarantees that the amplifier delivers precise, powerful, and distortion-free sound. This robust amplifier exemplifies B&K Components’ dedication to offering high-fidelity audio reproduction for discerning audiophiles.