Here this circuit is based on the principle of audio amplification using operational amplifier and pulse width modulation using 555 Timer. In this article we are describing the principle, design and ...

Jake Peterson is Lifehacker’s Tech Editor, and has been covering tech news and how-tos for nearly a decade. His team covers all things technology, including AI, smartphones, computers, game consoles, ...

A few weeks before WWDC, Apple previewed a few new accessibility features that will be coming later this year. One of those features was background sounds, which Apple plans to ship in iOS 15.

You are at home, browsing the web, or watching a movie on Netflix and the only element disrupting your peace and comfort is a very important appointment, due in 4 hours. Knowing how easily you can ...