100W Amplifier Circuit 2N3055 Transistor

100W Power Amplifier Circuit Diagram using dual 2N3055 Transistors — 100W Amplifier Circuit using dual 2N3055

Introduction

A power amplifier is a vital component in any audio system, as it is responsible for amplifying the weak audio signal to a level suitable for driving loudspeakers. In this article, we will discuss a 100W power amplifier circuit diagram that utilizes dual 2N3055 transistor. This amplifier circuit is capable of delivering a clean and powerful audio output, making it an excellent choice for various audio applications.

Specification of 2N3055 Transistors:

The 2N3055 transistor is an NPN power transistor with a maximum collector current rating of 15A.
It has a maximum collector-base voltage of 100V, making it suitable for high power applications.
The transistor features a high current gain, typically ranging from 20 to 70, enabling it to deliver significant amplification.

100W Amplifier Circuit Diagram 2N3055 Transistor

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

100W Power Amplifier Circuit Diagram using dual 2N3055 Transistor — 100W Amplifier Circuit using dual 2N3055

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Components List of 100W Amplifier Circuit 2N3055

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

2N3055 Transistor x 2
2N3509 Transistor x 2
2N4355 Transistor x 1
MPS6533 Transistor x 1
100k Resister x 1
270k Resister x 1
2.2K Resister x 2
150k Resister x 1
100 Ohms Resister x 1
39k Resister x 1
10k Resister x 2
1k Resister x 1
3.9k Resister x 1
22 Ohms Resister x 2
390 Ohms Resister x 1
120 Ohms / 2W Resister x 2
0.5 Ohms / 5W Resister x 2
10 Ohms / 2W Resister x 1
4.7uF Capacitor x 1
47uF/50V Capacitor x 2
100uF Capacitor x 1
10uF Capacitor x 1
220uF Capacitor x 1
220pF Capacitor x 1
2200uF Capacitor x 1
0.047uF Capacitor x 1
CD0014 Diode x 2
30V Power Supply
Speaker 4 Ohms

Explanation of 100W Amplifier Circuit 2N3055 Transistor

The 100W power amplifier circuit diagram using dual 2N3055 transistor is designed to deliver high-quality audio output with minimal distortion. The circuit follows a traditional class AB amplifier topology, which combines the advantages of class A and class B designs.

The input audio signal is fed through a capacitor and resistor network, ensuring proper coupling. The signal is then amplified by the dual 2N3055 transistors, which can handle high current levels. These transistors work in push-pull configuration, ensuring both halves of the AC waveform are amplified.

The power supply for the amplifier circuit should be well regulated to prevent fluctuations that could impact audio quality. A suitable power supply can be constructed using a transformer, rectifier, and filter capacitors.

Conclusion

The 100W power amplifier circuit diagram using dual 2N3055 transistor offers excellent audio performance, making it an ideal choice for various audio applications. The use of high-quality transistors such as the 2N3055, 2N3509, and 2N4355 and MPS6533 enables the amplifier to deliver clean and powerful sound reproduction.

By utilizing a class AB amplifier topology, this circuit ensures both efficiency and low distortion, resulting in superior audio quality. Manufacturers and audio enthusiasts can benefit from the simplicity and reliability of this circuit, making it a popular choice in the audio industry.

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