There are few things more dispiriting than wearing a new pair of shoes on a bad weather day, then coming home and finding water stains or rings of road salt once they’ve dried. Although there ...

Lotions and sprays can be effective if used properly. However, applying enough spray to all needed areas can be difficult. Ultraviolet (UV) radiation from the sun can cause painful sunburn and lead to ...

Abstract: This paper proposes a dual-band wireless power receiver capable of both kHz-band and MHz-band wireless charging. The proposed rectifier automatically switches between two charging modes ...

Or is it? To push the crystal radio into the future a bit, [tsbrownie] tried to design a receiver around standard surface-mount inductors, and spoiler alert — it didn’t go so well. His ...

A tuned circuit formed by a capacitor and an inductor is a familiar enough circuit, and it’s understood that it will resonate at a particular frequency. As that frequency increases, so the size ...