Due to the advantages like low voltages, long life, cheap, reliable, fast on-off switching etc, the LED's are used in many applications.

Play dough circuits 2: experiment with electricity Last time, we went through the basics of how to make simple electrical circuits with play dough and light-emitting diodes, now it's time to ...

"For LED circuits, you can simply tape the LEDs on to the copper traces to make the connection," explains Qi.

Many equipment manufacturers prefer protection circuits combining resettable overcurrent protection devices with upstream fail-safe protection. In this example, R1 represents a ballast resistor used ...

How to design LED streetlamp driver circuits In many consumer applications for lighting the cost of existing technology – namely incandescent light bulbs or fluorescent tubes – is so low that LED ...

Compared with the circuit in Figure 1 , Figure 2 ’s LED emits only in close vicinity of the zero-crossing point and receives its power from the previously charged capacitor, so you can reduce the ...

Finally, they showed that when the circuit was deposited onto a polymer substrate, its performance remained stable even when bent to a radius of 15mm – confirming its flexibility. Thanks to these ...

The LED is glowing less brightly because play dough has some electrical resistance. The more play dough a current has to pass through in a circuit, the dimmer the LED will glow.