160W HiFi MOSFET Amplifier Schematic Diagram

Overview

The interest in high-fidelity audio amplifiers has grown significantly over the years, as individuals seek to enhance their audio experience at home. A notable amplifier that provides outstanding performance is the 160W HiFi MOSFET Amplifier Circuit Diagram. This circuit employs various transistor types such as 2SJ162, 2SK1058, 2SB649, 2SD669, and BC556B across different sections to guarantee exceptional sound quality. In this article, we will explore the circuit diagram and specifications of the transistors utilized in the output, driver, and preamplifier sections.

Transistor Specifications :

2SJ162:

Drain-Source Voltage: 160V
Continuous Drain Current: 7A
Power Dissipation: 100W
Total Gate Charge: 110nC
Operating Frequency: 1MHz

2SK1058:

Drain-Source Voltage: 160V
Continuous Drain Current: 10A
Power Dissipation: 100W
Total Gate Charge: 170nC
Operating Frequency: 1MHz

2SB649:

Collector-Base Voltage: 80V
Collector Current: 1.5A
Power Dissipation: 1W
Transition Frequency: 150MHz
Gain: 100-900

2SD669:

Collector-Base Voltage: 80V
Collector Current: 1.5A
Power Dissipation: 1W
Transition Frequency: 150MHz
Gain: 100-900

BC556B:

Collector-Emitter Voltage: 65V
Collector Current: 0.1A
Power Dissipation: 0.5W
Transition Frequency: 100MHz
Gain: 110-800

160W HiFi MOSFET Amplifier Schematic Diagram

This project can be constructed with several fundamental components. Below is the circuit diagram for this project.

160W HiFi MOSFET Amplifier Schematic Diagram

40V Amplifier Power Supply

Warning: This website includes details about high voltage circuits. Enter at your own risk, making sure you have the necessary knowledge and safety precautions to avoid electric shock or harm.

List of Components for 160W HiFi MOSFET Amplifier Schematic Diagram

Below is the comprehensive list of components utilized in this project:

Transistors:

2SJ162 Transistor x 1 (Alternatives: IRFP240, 2SK1530 or BUZ900DP)
2SK1058 Transistor x 1 (IRFP9240, 2SJ201 or BUZ905DP)
2SB649 Transistor x 2
2SD669 Transistor x 2
BC556B Transistor x 4

Resistors:

0.47/5W Resistor x 2
470/2W Resistor x 2
10/3W Resistor x 1
2.2k Resistor x 1
22k Resistor x 1
47k Resistor x 1
470 Resistor x 1
1k Resistor x 4
3.9k Resistor x 2
100 Resistor x 3
10k Resistor x 1
2.5k Trimmer x 1
100 Trimmer x 1

Capacitors:

2.2uF Capacitor x 1
470pF Capacitor x 1
47uF Capacitor x 2
104J Capacitor x 3
22pF Capacitor x 2
220uF Capacitor x 2

Overview of the 160W HiFi MOSFET Amplifier Schematic Diagram

The Output Section:

Within the output section of the 160W HiFi MOSFET Amplifier Circuit Diagram, two transistors are utilized: 2SJ162 and 2SK1058. Alternatively, you may opt for other transistors listed in the components section above. These are MOSFET transistors known for their superior power capabilities and minimal distortion traits. When these transistors are correctly biased and configured, they guarantee a clear and dynamic audio output.

The Driver Section:

In the driver section of this amplifier circuit, two complementary transistors are employed: 2SB649 and 2SD669. These transistors are tailored for audio applications and deliver outstanding amplification and signal handling performance. Together with the output transistors, they facilitate effective power transfer and reduce signal degradation to a minimum.

The Preamplifier Section:

To achieve the best possible audio signal processing and amplification, the preamplifier section utilizes the BC556B transistor. This transistor is recognized for its low noise and high gain properties, which enhance the weak input signal, making it ready for further amplification in the driver and output sections. The BC556B transistor is essential for maintaining the original audio quality and providing a rich, detailed sound output.

Conclusion

The 160W HiFi MOSFET Amplifier Circuit Diagram, which employs 2SJ162, 2SK1058, 2SB649, 2SD669, and BC556B transistors, presents a high-quality audio amplification solution for audiophiles and enthusiasts. The meticulous selection of transistors in the output, driver, and preamplifier sections guarantees optimal power handling, low distortion, and minimal signal degradation. With its outstanding performance and specifications, this circuit delivers an immersive listening experience, making it an ideal choice for high-fidelity audio enthusiasts.

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