I have used Red and Green LED’s. When node A is positive green LED glows while when node B is positive, Red LED glows. This indicates polarity of the input d.c voltage . 2) LED as a Continuity tester: ...

LED Tester Circuit Schematic simple led tester schematic. Why 3V? 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 ...

Learn how to solder and wire LED circuits with our best practices and tips. Find out how to choose the right tools, prepare the components, make good connections, test the circuit, and ...

A simple KiCad project for an LED switch circuit. Contribute to Jakeieboy/light-circuit development by creating an account on GitHub.

[Henryk] just sent us his latest episode of simple LED circuit puzzles. In front of the camera he solders one pin of each of the 3 LEDs to a different switch. He then puts the three assemblies in h… ...

Following is the circuit diagram of the earring. It is a very simple circuit indeed! You can access the AtTiny85 software code using the following link. This is a great starting point to create your ...