Controlling the speed of a fan with PWM
We are going to see how to control the speed of a fan with PWM. What it consists of and why to do it this way.
Theory
What is a PWM (Pulse Width Modulation) signal?
PWM signals are increasingly used in computers and microcontrollers (Arduino or ESP8266). Let's see what they are in an understandable way!
The ESR (Equivalent Series Resistance) of Capacitors
ESR of capacitors is the main cause of problems in switching power supplies. Here's what you need to know.