After accidentally crushing the plastic envelope on a cheap LED light bulb ... of these inexpensive LED bulbs last month, discovering they all shared a similar circuit topology.

Almost a month ago I started trying to reverse engineer an inexpensive LED color changing light bulb. With your help ... the power supply uses the example circuit from the LNK304 datasheet.

they also provide an excellent example of a series circuit. The individual bulbs that make up the string are connected in series, or one after another. When a voltage is applied across the entire ...

Each LED contains a circuit board with a microprocessor, wireless radio, motion sensor and ambient light ... For example, if the family is clustered in the kitchen, not only could the bulbs ...

The earliest known lamps are some 40,000 years old. Cave dwellers in Western Europe made them by hollowing out stones, and burning animal fat through a wick made of moss. Light is an essential ...

What do you do when your phone needs to be charged? You take a cable, plug in the phone, and boom: It's charging. What if you want to connect an external monitor to your laptop? Yup, there's an ...