300W Audio Amplifier Circuit Diagram using 2SC5200 & 2SA1943 APEX AX11TEF

Introduction

The demand for powerful audio amplifiers is increasing day by day as people seek to enhance their listening experience. To meet this demand, we present a 300W Audio Amplifier Circuit Diagram using 2SC5200 & 2SA1943 in the output section, MJE240, MJE350, MPSA92, MPSA42 in the driver section, and BC546 transistors in the preamplifier section. This circuit boasts high-quality sound reproduction and robust output capabilities, making it an ideal choice for audio enthusiasts.

Transistor Specifications:

1. 2SC5200:

• Transistor Type: NPN
• Power Dissipation: 150 W
• Collector-Base Voltage: 230 V
• Collector-Emitter Voltage: 230 V
• Collector Current: 15 A
• Transition Frequency: 50 MHz

2. 2SA1943:

• Transistor Type: PNP
• Power Dissipation: 150 W
• Collector-Base Voltage: -230 V
• Collector-Emitter Voltage: -230 V
• Collector Current: -15 A
• Transition Frequency: 30 MHz

3. MJE240:

• Transistor Type: NPN
• Power Dissipation: 20 W
• Collector-Base Voltage: 300 V
• Collector-Emitter Voltage: 300 V
• Collector Current: 1.5 A
• Transition Frequency: 40 MHz

5. MPSA92:

• Transistor Type: PNP
• Power Dissipation: 0.625 W
• Collector-Base Voltage: -300 V
• Collector-Emitter Voltage: -300 V
• Collector Current: -500 mA
• Transition Frequency: 500 MHz

7. BC546:

• Transistor Type: NPN
• Power Dissipation: 0.5 W
• Collector-Base Voltage: 80 V
• Collector-Emitter Voltage: 65 V
• Collector Current: 100 mA
• Transition Frequency: 300 MHz

300W Amplifier Circuit Diagram using 2SC5200 & 2SA1943

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

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 300W Amplifier Circuit using 2SC5200 & 2SA1943

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

• 2SC5200 Transistor x 3
• 2SA1943 Transistor x 3
• MJE240 Transistor x 1
• MJE350 Transistor x 1
• MPSA92 Transistor x 2
• MPSA42 Transistor x 1
• BC546 Transistor x 3
• 1N4148 Diode x 7

Explanation of 300W Amplifier Circuit using 2SC5200 & 2SA1943

The circuit utilizes the powerful 2SC5200 and 2SA1943 transistors in the output section to deliver a whopping 300W of power. These transistors are known for their excellent thermal stability and ability to handle high voltage and current levels. This ensures distortion-free amplification even at high volumes and demanding audio frequencies.

In the driver section, the MJE240 and MJE350 transistors play a crucial role in providing the necessary amplification and current gain. These transistors are carefully selected for their high performance and low distortion characteristics, enabling accurate signal reproduction.

To further enhance the efficiency and stability of the amplifier, the MPSA92 and MPSA42 transistors are employed. These transistors are dedicated to serving as drivers for the 2SC5200 and 2SA1943 transistors, ensuring smooth signal transfer and reducing the likelihood of distortions.

The preamplifier section of this circuit utilizes the BC546 transistors, which excel in low-level amplification and signal conditioning. These transistors are responsible for amplifying the weak audio signal from the source, making it suitable for further amplification and processing.

Conclusion

In conclusion, the 300W Audio Amplifier Circuit Diagram described above showcases the utilization of high-performance transistors such as 2SC5200, 2SA1943, MJE240, MJE350, MPSA92, MPSA42, and BC546. These transistors work harmoniously to deliver a powerful and distortion-free audio amplification experience. With robust output capabilities and excellent sound reproduction, this amplifier circuit is sure to satisfy even the most discerning audiophiles.

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