I’d been looking forward to Philips Hue’s first video doorbell for months, but it’s fallen short of what I hoped for ...

The concept of building your own hydroelectric generator seems simple at face value: use gravity to impart as much force as ...

Shilchar Technologies Limited is an India-based company, which is engaged in the business of manufacturing of distribution and power transformers as well as electronics and telecommunication ...

When the power fails on a subzero night, your alarms are only as trustworthy as the batteries hiding behind their plastic ...

Abstract: This paper analyzes application of a matrix transformer structure in high frequency LLC resonant converter. Soft-switching condition for primary switches has been derived considering the ...

If defrost isn’t working, something in the chain is broken. This step-by-step approach shows you exactly where to look and what to test.

Robot vacuums, video doorbells, pet cameras, and much more: These picks will please almost anyone on your holiday list. And they're all tested by our experts. I’m PCMag’s senior writer covering smart ...

Finnish company Enedo Power has turned to GaN transistors to put a 1,200W ac-dc power supply into a 41 x 107 x 206mm (900cm3) volume. Called HDP1200, they run from 85 – 305Vac (de-rated to 1kW below ...

There’s a lot of junk on the market — these are the best smart frames that are worth your money. Here's a list of the best streaming devices you can buy for your TV, as chosen by Engadget editors. The ...