使用LM1875的20W音频放大器(20W Audio Am

使用LM1875的20W音频放大器(20W Audio Amplifier using LM1875)

Specifications
 
20W Audio Amplifier kit is based on LM1875 IC. 

Power supply - 48 VDC

Output - 20 W, 4 Ω

Very low distortion (THD - 0.015%), good channel separation and ripple rejection

IC built-in thermal, short circuit protections

Internal output protection diodes

Terminal pins for connecting input

Power Battery Terminal (PBT) for easy power supply and speaker connection

Power-On LED indicator

Heatsink for IC

Four mounting holes of 3.2 mm each with nut and stud

PCB dimensions 48 mm x 60 mm

Schematic

 
Parts List