200W Amplifier Circuit Diagram using 2SD1047 & 2SB817 Transistors

Introduction

An amplifier circuit is an essential component in any audio system, as it amplifies the weak audio signals received from the sources to a higher power level for improved sound quality. A 200W amplifier circuit diagram is a popular choice among audio enthusiasts who desire high power output and excellent audio performance. This article will discuss a 200W amplifier circuit that utilizes a couple of pairs of 2SD1047 and 2SB817 transistors in the output section, TIP41 and TIP42 transistors in the driver section, and A1015 transistors in the preamplifier section.

Transistor Specifications:

1. Transistor: 2SD1047

• Type: NPN
• Manufacturer: Toshiba
• Maximum Collector Current: 15A
• Maximum Collector-Emitter Voltage: 140V
• Maximum Power Dissipation: 150W
• Gain (hFE): 30 to 70
• Frequency Transition (ft): 2.5MHz
• Package: TO-3P

2. Transistor: 2SB817

• Type: PNP
• Manufacturer: Toshiba
• Maximum Collector Current: 12A
• Maximum Collector-Emitter Voltage: -140V
• Maximum Power Dissipation: 80W
• Gain (hFE): 30 to 70
• Frequency Transition (ft): 25MHz
• Package: TO-3P

3. Transistor: TIP41

• Type: NPN
• Manufacturer: STMicroelectronics
• Maximum Collector Current: 6A
• Maximum Collector-Emitter Voltage: 40V
• Maximum Power Dissipation: 65W
• Gain (hFE): 15 to 75
• Frequency Transition (ft): 3MHz
• Package: TO-220

4. Transistor: TIP142

• Type: NPN
• Manufacturer: STMicroelectronics
• Maximum Collector Current: 10A
• Maximum Collector-Emitter Voltage: 100V
• Maximum Power Dissipation: 125W
• Gain (hFE): 1000 (minimum)
• Frequency Transition (ft): 3MHz
• Package: TO-218

5. Transistor: A1015

• Type: PNP
• Manufacturer: Toshiba
• Maximum Collector Current: 150mA
• Maximum Collector-Emitter Voltage: -50V
• Maximum Power Dissipation: 300mW
• Gain (hFE): 70 to 700
• Frequency Transition (ft): 150MHz
• Package: TO-92

200W Amplifier Circuit using 2SD1047 & 2SB817 Transistors

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 200W Amplifier Circuit using 2SD1047 & 2SB817

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

Transistors:

• 2SD1047 Transistor x 2
• 2SB817 Transistor x 2
• TIP41 Transistor x 2
• TIP42 Transistor x 2
• A1015 Transistor x 3

Resistors:

• 0.47 ohms / 5W Resister x 4
• 6.8 ohms / 1W Resister x 2
• 100 ohms / 1W Resister x 2
• 18K – 1/2W Resister x 2
• 1K – 1/2W Resister x 1
• 10 ohms / 1W Resister x 2
• 270 ohms – 1/2W Resister x 1
• 10K – 1/2W Resister x 1
• 330 ohms / 1/2W Resister x 1
• 56 ohms / 1/2W Resister x 1
• 27 ohms / 1W Resister x 1
• 820 ohms – 1/2W Resister x 1

Capacitors:

• 104J Capacitor x 3
• 47uF/63v x 1
• 330pF (ceramic) x 1

Miscellaneous:

• 1N4004 Diode x 5
• Coil 10 turns with 1/4 copper core 18
• 36v-0v-35v 7A Transformer
• ±50V Symmetrical Power Supply

Explanation of 200W Amplifier Circuit using 2SD1047 & 2SB817

This 200W amplifier circuit diagram combines the power capabilities of the 2SD1047 and 2SB817 transistors in the output stage for high-power amplification. The TIP41 and TIP42 transistors drive the output transistors and provide efficient signal amplification. The A1015 transistors in the preamplifier section ensure low noise and accurate signal processing.

Conclusion

In conclusion, the amplifier circuit diagram using the 2SD1047, 2SB817, TIP41, TIP42, and A1015 transistors offers a high-power audio amplification solution with superior audio performance. These transistors, with their specific characteristics, ensure efficient amplification, low distortion, and accurate signal processing. By carefully following the circuit diagram and using these transistors, audio enthusiasts can build a powerful amplifier for their audio systems.

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