we noticed that the incandescent lamp in one of the jack-o’-lanterns was burnt out. Instead of simply replacing the outdated bulb, we decided to build a small dark detecting circuit with 2 ...

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 ...

Ford issued a recall affecting thousands of vehicles because of a potential fire risk. Here's what you need to do to stay safe.

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