In the optical devices such as optocouplers. As on-off indicator in various types of electronic circuits. Some LED’s radiate infrared light which is invisible. But such LED’s are useful in remote ...

Master these simple circuits and you'll be ready to create ... circuits powered by a 6-volt battery pack. You can connect multiple LEDs to one battery in two different ways. The one in this ...

but [Alain Mauer] wanted was to bring touch control to a simple LED strip. Not to be set deterred, he’s put together a simple TTP223-based switch board. Initially, he made a prototype using one ...

Ménard, Peugeot and colleagues have now shown that multiple photons can be produced far more easily using a simple superconducting circuit that comprises a capacitor, a coil inductor, and a Josephson ...

This circuit is a simple emergency light with 20 “white straw hat” LEDs. One advantage of this little circuit is that we can use any ordinary 5VDC mobile phone charger ( or a 5V solar panel) to ...

[Paul’s] project is a great example of how you can take a simple project and turn it into something more interesting. He built himself a jack-o-lantern with an Internet controlled RGB LED ...

could be used but I found no simple circuits. My first thought was just to connect a series current limiting resistor and LED to the cathode so that the LED would light when the reference ...

Building simple circuits with copper tape, LED bulbs, resistors, and watch batteries is not as simple as you might think. Notre Dame Elementary School STEM students are putting the engineering ...