| I spotted them for the first time during the Peltier lamp project: these cute little USB LED spotlights from a certain Swedish retailer that...
| I spotted them for the first time during the Peltier lamp project: these cute little USB LED spotlights from a certain Swedish retailer that...
| Texas Instruments has launched a pair of ICs designed to simplify wireless power solutions for mobile devices, consisting of a single-chip w...
| This night light has two power sources: a solar cell with a peak output voltage of about 6 V, and a Li-Ion cell with a voltage between 3.7 V...
| Lithium-based chemistries have for some time been showing the most promise of all battery technologies. Although they offer an unsurpassed e...
| Recharging batteries for devices such as digital cameras can be a problem when you’re on holiday in a remote or inhospitable region. You won...
| Tiny white LEDs are capable of delivering ample white light without the fragility problems and costs associated with fluorescent backlights....