150 Watt Hifi Audio Power Amplifier Board

150 Watt Audio Amplifier Board using 2SC5200 NPN Power Transistors

This amplifier board is designed for audio amplification applications using a dual-rail DC power supply.

Output Power:

• Maximum dynamic output power: up to 150 W (depends on supply voltage, load, and heat dissipation)
• Total Harmonic Distortion (THD): approximately 0.01% at 60 W output

Speaker Compatibility:

• Supports 4 Ω and 8 Ω speaker loads
• Suitable for speakers rated from 50 W to 200 W

Working Voltage:

• Dual supply: ±18 V to ±35 V DC
• Recommended transformer: 18-0-18 VAC to 25-0-25 VAC (step-down), depending on required output power

Configuration:

• Output stage uses 2SC5200 NPN power transistors
• Requires proper heat sinking for safe operation at higher power levels

Intended Use:

• Audio power amplification for home audio systems
• Subwoofer and full-range speaker amplifier applications
• DIY audio amplifier projects and testing setups