150W Audio Power Amplifier Circuit Diagram using 2SC2922 & 2SC1216

Introduction

In the world of audio amplifiers, power and sound quality are two crucial factors that enthusiasts and professionals seek. To meet these requirements, a 150W audio power amplifier circuit diagram using 2SC2922 & 2SC1216 has been designed. This circuit diagram incorporates high-quality components, including the 2SC2922 and 2SC1216 transistors in the output section, along with the BD139, BD140, BC637, BC638, 2SK30, MJE340, 2N5401, and BC546BP transistors in the driver and preamplifier sections. By utilizing these components, this amplifier promises to deliver exceptional audio performance.

Specifications of Components:

To understand the capabilities of each component used in this amplifier circuit, let us take a look at their specifications:

1. 2SC2922:
   • Maximum Collector-Emitter Voltage: 120V
   • Maximum Collector Current: 15A
   • Power Dissipation: 150W
   • Transition frequency (ft): 20MHz
   • Gain Group: O-Y
2. 2SC1216:
   • Maximum Collector-Emitter Voltage: 50V
   • Maximum Collector Current: 1A
   • Power Dissipation: 900mW
   • Transition frequency (ft): 100MHz
   • Gain Group: BL
3. BD139:
   • Maximum Collector-Emitter Voltage: 80V
   • Maximum Collector Current: 1.5A
   • Power Dissipation: 12.5W
   • Transition frequency (ft): 40MHz
   • Gain Group: Y
4. BD140:
   • Maximum Collector-Emitter Voltage: 80V
   • Maximum Collector Current: 1.5A
   • Power Dissipation: 12.5W
   • Transition frequency (ft): 25MHz
   • Gain Group: Y
5. BC637:
   • Maximum Collector-Emitter Voltage: 60V
   • Maximum Collector Current: 500mA
   • Power Dissipation: 625mW
   • Transition frequency (ft): 120MHz
   • Gain Group: G-Y
6. BC638:
   • Maximum Collector-Emitter Voltage: 45V
   • Maximum Collector Current: 800mA
   • Power Dissipation: 625mW
   • Transition frequency (ft): 100MHz
   • Gain Group: BL
7. BC546BP:
   • Maximum Collector-Emitter Voltage: 80V
   • Maximum Collector Current: 100mA
   • Power Dissipation: 500mW
   • Transition frequency (ft): 100MHz
   • Gain Group: G-Y

150W Power Amplifier Circuit Diagram using 2SC2922 & 2SC1216

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

2SC2922 & 2SC1216 Pinout

Components List of 150W Power Amplifier Circuit using 2SC2922 & 2SC1216

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

Transistors

• 2SC2922 Transistor x 1
• 2SA1216 Transistor x 1
• BD139 Transistor x 2
• BD140 Transistor x 1
• 2N5401 Transistor x 3
• BC546BP Transistor x 2
• MJE340 Transistor x 1
• 2SK30 Transistor x 1
• BC638 Transistor x 1
• BC637 Transistor x 1

Resistors

• 2.2K Resister x 2
• 47k Resister x 2
• 1.5K Resister x 1
• 1k Resister x 2
• 15k Resister x 1
• 6.8K Resister x 1
• 220Ω Resister x 2
• 100Ω Resister x 2
• 270Ω Resister x 2
• 2.2Ω ½W Resister x 2
• 0.33Ω 5W Resister x 2
• 10Ω 2W Resister x 1
• 10k Variable Resister x 1
• 2k Variable Resister x 1

Capacitors

• 220pF Capacitor x 1
• 1uF Capacitor x 2
• 47uF Capacitor x 2
• 100uF Capacitor x 2
• 0.1uF Capacitor x 2
• 100pF Capacitor x 1
• 330pF Capacitor x 1
• 100nF Capacitor x 3
• 470uF Capacitor x 2
• 47pF Capacitor x 1

Explanation of 150W Power Amplifier Circuit using 2SC2922 & 2SC1216

The 150W Audio Power Amplifier Circuit Diagram using 2SC2922 & 2SC1216 described here is designed using various transistors in different sections to achieve high-quality audio amplification. The output section of the amplifier is powered by 2SC2922 and 2SC1216 transistors, while the driver and preamplifier sections utilize BD139, BD140, BC637, BC638, 2SK30, MJE340, 2N5401, and BC546BP transistors.

The circuit starts with the preamplifier section, which consists of BC546BP transistors. This section is responsible for amplifying the low-level audio signals coming from the source and preparing them for further amplification. The amplified signals are then fed into the driver section.

The driver section includes BD139, BD140, BC637, and BC638 transistors. These transistors further amplify the preamplified signals to a level sufficient to drive the output transistors. They also provide the necessary current gain to overcome the loading effect of the output transistors.

The output section is powered by 2SC2922 and 2SC1216 transistors. These high-power transistors are capable of handling the higher current and voltage levels required for driving speakers. They provide the final amplification to the audio signals before they are delivered to the speakers.

Other transistors like 2SK30, MJE340, and 2N5401 are used for biasing and protection purposes to ensure stable and reliable operation of the amplifier circuit.

Conclusion

By utilizing the high-quality components mentioned above, this 150W audio power amplifier promises exceptional performance in terms of power output and sound quality. The 2SC2922 and 2SC1216 transistors in the output section ensure the amplifier’s power handling capabilities, while the BD139, BD140, BC637, BC638, 2SK30, MJE340, 2N5401, and BC546BP transistors in the driver and preamplifier sections guarantee precise amplification and signal processing. The combination of these components makes this amplifier ideal for audio enthusiasts and professionals seeking a powerful and high-quality audio amplification solution.

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