Controlling LEDs is really quite simple. As you know, they need to be current limited which is as easy as applying Ohm’s law to your given set of values. To make things even more even there’s a slew ...

In this tutorial I am going to create a Police Light themed LED Flashing circuit using the 555 timer IC. My 5-year old son asked me to create a Police Car like flashing light that he can put on top of ...

555 timer IC is an electronic component that we use in many electronic projects. It is called a timer because it can be used to control the time for which an electronic device stays on or off. The 555 ...

In this step-by-step tutorial, we're diving into the world of electronics and microcontrollers to create a personalized 8 by 8 LED matrix that can be controlled using an Arduino board In this ...

In this short tutorial, we will show you how you can build yourself a transistor-driven color-changing RGB LED lights. The building process is simple and requires only a few transistors, capacitors ...

The LED is a kind of semiconductor called “light-emitting diode”, which is an electronic device made from semiconducting materials (silicon, selenium, germanium, etc.). It has a anode and a cathode.

This is a simple flashing led circuit with 2 leds and 2 NPN transistors. It illustrates the behavior of transistors and capacitors and if you use an oscilloscope it will be very easy to determine what ...

It seems deceptively simple to establish galvanic isolation with the help of optocouplers between circuits that operate at different ground potentials. Optocouplers draw power from the isolated ...