PWM driver with MOSFET transistor
Learn how to build, and how it works, a PWM driver with a MOSFET transistor!
Electronics
PWM driver with BJT transistor
I will explain how to build, and how it works, a PWM controller or driver with a "normal" bipolar transistor.
How to repair your switching power supply
Do you need to repair your switching power supply? Here's how you can repair a malfunctioning power supply yourself.
Loto Instruments OSC482 USB Oscilloscope
The Loto Instruments OSC482 oscilloscope is one of the most frequently used measuring instruments in my laboratory. I am delighted with it and it has become a must-have.
Tutorial: Variable speed fan for Raspberry temperature controller
Do you, like me, want to reduce (or even eliminate) the annoying noise of the Raspberry Pi 4 fan? If so, here is the ultimate solution. Easy and cheap.
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.
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.
The "Transistortester" component tester or LCR-TC1
The LCR-TC1 meter is a simply amazing device. I couldn't live without it (well, yes, but my life would be a bit harder).