How to Build a Class-D Power Amp
Cezar Chirila @ allaboutcircuits.com shows how to build a Class-D amplifier which has amazing efficiency.
What is a Class-D audio power amplifier? The answer could be just a sentence long: It is a switching amplifier. But in order to fully understand how one works, I need to teach you all its nooks and crannies.
How to Build a Class-D Power Amp – [Link]