Instead of simply replacing the outdated bulb, we decided to build a small dark detecting circuit with 2 yellow LEDs based on this Evil Mad Scientist Laboratories design. After successfully ...

Of course, the resistor also has to have a sufficient view of the LED. You might use this as a safety light that only works in the dark. A simple circuit, but it just goes to show that we tend to ...

In a series circuit, the current passes from the power ... Taizhou Haoran Machinery sells machines that create LED holiday light strings. Here's how it works. First, the wire is fed into the ...

A team of physicists, engineers, opticians and photonics specialists at Zhejiang University, in China, working with a pair of ...

Lincoln Navigator recall involves over 35,000 vehicles with faulty LEDs that could cause fires. Dealers will disable faulty ...

Suppose a manufacturer recommends a maximum voltage of \(2V\) across their LEDs and maximum current of \(10mA\). Using properties of a series circuit, the sum of the voltages across the LED and ...