The Philips Semiconductors TDA8551 is a small audio amplifier with an integrated volume control. When operated from +5 V, it delivers a nominal output power of more than one watt into 8 ohms. It can ...

A regular Hack A Day reader sent in a tip about an LM386 stero amplifier with digital volume control. The resulting build is very professional and could easily be adapted into a slick iPod dock build.

An integrated multichip module implements the power output stage for a synchronous buck converter with the capability of driving a 40 A load at over 90% peak efficiency. The integrated PowIRstage® ...

In this, the second part of four articles, Kendall Castor-Perry introduces the driver circuit for what he calls the “Class i” output stage. He shows through detailed analysis that it can deliver ...