This white-LED driver circuit is ideal for use in a garden light. It automatically turns the LED on at night and runs from a single 1.2V nicad cell which is recharged by a solar cell during the day.

In some houses, the electricity meter (Fuse) is badly lit place. If 12V transformer is also placed in this area with a circuit, it may be more useful in providing emergency lightening by two high ...

Cyclists can already choose between plenty of cheap spoke-mounted LEDs that turn their bike wheels into highly-visible "rings of light" while they're turning. California-based startup MonkeyLectric ...