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 ...

3V is sufficient to turn on any LED, but is within its reverse break down voltage rating (that is why I did not use the common 9V battery). Short circuit current is approx. 30mA. I used a 3V lithium ...

Here’s a simple project for your Halloween celebration ... we decided to build a small dark detecting circuit with 2 yellow LEDs based on this Evil Mad Scientist Laboratories design.

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 ...

Figure 1. A Simple Over-Voltage Protection Circuit for LED Drivers This boost circuit implements current mode control and senses the LED current via resistor R14. The output voltage is boosted to just ...

(Courtesy: Liu Yang, Zhejiang University) Researchers in China have fabricated transparent and flexible LED screens using a simple, low-cost manufacturing ... networks of highly transparent conductive ...

Older designs relied on simple resistors to limit LED drive current, but designing an LED circuit ... to protect against damage resulting from electrical shorts, overloaded circuits or customer misuse ...