120W Power Amplifier Circuit Diagram using 2SC5200 & TL071

Introduction

A power amplifier is an essential component in electronic devices that amplify the power of an audio signal to drive loudspeakers. The 120W Power Amplifier Circuit Diagram using 2SC5200 in the output section, TIP122, TIP127 in the driver section and TL071 IC in the preamplifier section is a reliable and efficient circuit that can deliver high-quality audio output. In this article, we will explain the working of this circuit and provide a list of specifications for the key components used.

Specifications:

2SC5200:

  • Maximum power dissipation: 150W
  • Maximum collector current: 15A
  • Maximum operating frequency: 30MHz
  • Voltage rating: 230V

TIP122:

  • Maximum collector current: 5A
  • Maximum collector-emitter voltage: 100V
  • Gain hfe: 100-250
  • Power dissipation: 65W

TIP127:

  • Maximum collector current: 5A
  • Maximum collector-emitter voltage: -100V
  • Gain hfe: 100-250
  • Power dissipation: 65W

TL071:

  • Voltage range: ±18V
  • Offset voltage: 3mV
  • Input bias current: 40pA
  • Operating temperature range: -40°C to 105°C



120W Amplifier Circuit Diagram using 2SC5200 & TL071

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

120W Power Amplifier Circuit Diagram using 2SC5200 & TL071
120W Power Amplifier Circuit Diagram using 2SC5200 & TL071
40V Amplifier Power Supply
40V Amplifier Power Supply Circuit

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 120W Amplifier Circuit using 2SC5200 & TL071

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

  • 2SC5200 or 2N3055 Transistor x 2
  • TIP122 Transistor x 2
  • TIP127 Transistor x 2
  • TL071 Op-amp (operation amplifier) IC x 1
  • 12V Zener Diode x 2
  • 1N4001 Diode x 2
  • 1N4148 Diode x 1




Explanation of 120W Amplifier Circuit using 2SC5200 & TL071

The 120W Audio Power Amplifier Circuit using 2SC5200 & TL071 consists of three main sections: the preamplifier, driver section, and output section. The TL071 IC is used in the preamplifier section to amplify the input audio signal and provide necessary gain. The TIP122 and TIP127 transistors are used in the driver section to further amplify the signal and drive the 2SC5200 power transistor in the output section.

The 2SC5200 transistor is a high-power NPN transistor capable of handling up to 230W of power with a maximum collector current of 15A. The TIP122 and TIP127 transistors are complementary NPN and PNP transistors, respectively, that provide additional amplification and current drive capabilities. The TL071 IC is a low-noise JFET-input operational amplifier that is used in the preamplifier section for high-fidelity audio amplification.

Conclusion

Overall, the combination of these components results in a powerful and efficient power amplifier circuit capable of delivering up to 120W of audio power with low distortion and high efficiency.

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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!

120W Power Amplifier Circuit using 2SC5200 & TL071
120W Power Amplifier Circuit using 2SC5200 & TL071
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2 comments on 120W Power Amplifier Circuit Diagram using 2SC5200 & TL071

  1. Hi! I am referring to your 120WAmp using 3055/5200 in the opt stage which I wish to build as a drop in replacement for an amp that already has a combination Pwr unit giving out
    +50-0-50v balanced feed to the previous Pwr amp. Now my Q is will this unit rated for a supply of +-40v withstand a voltage of+-50v? If no then what are the proposed changes? Of yes what will be the power opt? Awaiting your long reply. Thank you very much.

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