What is Pulse-width Modulation? Pulse Width Modulation (PWM) is a fancy term for describing a type of digital signal. Pulse…

This post describes a circuit that has a capacitive input sensor and a switching transistor at the output PNP. When…

Nowadays you can buy white LEDs, which emit quite a bit oflight. They are so bright that you shouldn’t look…

Light Emitting Diodes or simply LED´s, are among the most widely used of all the different types of semiconductor diodes…

EDs (Light-emitting diode) can be found in many colors and sizes. This example shows the simplest thing you can do with…

An RGB LED has 4 pins, one for each color (Red, Green, Blue) and a common cathode. It has three…

This application of the well-known Type 555 timer is intended for model railway enthusiasts wishing to construct a two-lamp flashing…