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 ...

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.

Here is the simple solution to make an automatic ... The Solar Lamp circuit including the relay can be enclosed in a small box. If a reflector is fixed behind the White LEDs, intensity of light can be ...

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 ...

In the industry, I have found that an LED ballast circuit is really more like an ... ballasts will most likely cost less than using multiple custom ballasts. Many companies lack the expertise ...

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 ...

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 ...