Designers of early indoor LED light bulbs faced numerous technical hurdles, including AC-to-DC conversion, thermal heat-sinking, constraints imposed by current bulb sizes, electrical transients, and ...

I smartened up a lamp for pocket change.

This white LED flood lights illuminates your porch with cool white light. The circuit is too simple and energy saving design. Its current consumption is practically nil but can provide light like a 20 ...

Using a 13-year-old car means small things will fail every now and then, due to the ageing of components. This time it was ...