100W HiFi Amplifier Circuit Diagram using 2SC3280 Transistors

100W HiFi Amplifier Circuit using 2SC3280 Transistors
100W HiFi Amplifier Circuit using 2SC3280

Introduction

In the world of audio enthusiasts, the search for the perfect amplifier circuit is always an ongoing quest. The power, clarity, and fidelity of the sound are crucial factors that determine the quality of an amplifier. Today, we will be exploring a 100W HiFi amplifier circuit diagram that utilizes the highly efficient 2SC3280 transistors in the output section, TIP41 and TIP42 transistors in the driver section, and A733 transistors in the preamplifier section. This circuit promises to deliver high-quality audio performance and is worth exploring for any audio enthusiast.

Specification of 2SC3280:

The 2SC3280 transistor is a bipolar NPN type transistor with a current rating of 2A and a voltage rating of 150V. It is designed specifically for high-power amplifier applications and offers excellent linearity and wide frequency response. With its high gain, low noise performance, and high power handling capabilities, the 2SC3280 transistor is a perfect fit for the output stage of our 100W HiFi amplifier circuit.

Specification of TIP41 and TIP42:

The TIP41 and TIP42 transistors are complementary power transistors in a TO-220 package. The TIP41 is an NPN transistor, while the TIP42 is its PNP counterpart. Both transistors offer high collector current and power dissipation capabilities, making them ideal for use in the driver stage of our amplifier circuit. The TIP41 and TIP42 transistors provide excellent switching performance and low on-resistance, ensuring efficient and reliable signal amplification.

Specification of A733:

The A733 transistor is a low noise, high gain PNP transistor primarily used in preamplifier circuits. With its low noise figure and high current gain, the A733 transistor provides exceptional performance in audio amplifier applications. It is well-suited for accurately amplifying weak input signals, ensuring precise control of the audio signal forward to the driver stage.



HiFi Amplifier Circuit Diagram using 2SC3280

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

100W HiFi Amplifier Circuit Diagram using 2SC3280 Transistors
100W HiFi Amplifier Circuit Diagram using 2SC3280 Transistors
45V Amplifier Power Supply Circuit Diagram
±45V Power Supply Circuit Diagram

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.




More Circuit Layouts



Components List of HiFi Amplifier Circuit using 2SC3280

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

Transistors:

  • 2SC3280 Transistor x 2
  • TIP41 Transistor x 2
  • TIP42 Transistor x 1
  • A733 Transistor x 2

Resisters:

  • 22k Resister x 1
  • 15k Resister x 1
  • 680 Resister x 2
  • 33 Resister x 1
  • 560 Resister x 1
  • 56k Resister x 1
  • 4.7k Resister x 2
  • 120 Resister x 1
  • 10 Resister x 1
  • 100 Resister x 2
  • 0.47/5W Resister x 2

Capacitors:

  • 47uF Capacitor x 3
  • 0.47uF Capacitor x 1
  • 150pF Capacitor x 1
  • 1nF Capacitor x 2

Miscellaneous:

  • 1N4006 Diode x 3
  • 45V Power Supply




Explanation of HiFi Amplifier Circuit using 2SC3280

The circuit diagram consists of a power supply, input stage, preamplifier stage, driver stage, and output stage. The power supply provides the necessary DC voltage for the amplifier circuit to operate. The input stage is responsible for accepting the audio signal from the source and feeding it into the preamplifier section.

The preamplifier section, comprised of A733 transistors, amplifies the signal received from the input stage. This section ensures that the signal is strong enough to be amplified further without losing fidelity or introducing noise.

Next, the driver section, utilizing TIP41 and TIP42 transistors, takes the amplified signal from the preamplifier and drives it to the output section. The driver transistors provide the necessary current gain and voltage amplification to ensure the audio signal is delivered efficiently.

Finally, we have the output section, where the magic happens. The 2SC3280 transistors in this section receive the amplified signal from the driver stage and deliver a whopping 100W of power to your speakers. These transistors are designed to handle high power levels while delivering exceptional audio quality.

Conclusion

In the expanding world of audio technology, finding the perfect amplifier circuit is vital for enthusiasts seeking high-quality sound performance. Our 100W HiFi amplifier circuit, utilizing the powerful 2SC3280 transistors in the output section, TIP41 and TIP42 transistors in the driver section, and A733 transistors in the preamplifier section, provides an excellent option for achieving outstanding audio fidelity. With their superior specifications and capabilities, these transistors ensure efficient power handling, low noise, and excellent signal amplification. By employing this circuit, audio enthusiasts can experience a remarkable listening experience that elevates their music to new heights of clarity and precision.

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For more project and circuit diagrams, you can go through the Schematics in the main menu where you can find many interesting projects and circuit diagrams like audio amplifier circuits, voltage booster circuitbattery charger circuit and timer circuits etc., which are all beginner circuit projects. Feel free to check them out!

100W HiFi Amplifier Circuit Diagram using 2SC3280 Transistors
HiFi Amplifier Circuit Diagram using 2SC3280
100W HiFi Amplifier Circuit using 2SC3280 Transistors
100W HiFi Amplifier Circuit using 2SC3280

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