Скачать с ютуб Easy Fan Speed Control with a Transistor and Potentiometer - Hacking a fan Part 2 в хорошем качестве

Easy Fan Speed Control with a Transistor and Potentiometer - Hacking a fan Part 2

Welcome to Part 2 of hacking a computer fan! In this video, we dive into how to control the speed of a 12V computer fan by building a simple current-limiting controller using a BD139 transistor and a potentiometer. I'll walk you through the basics of voltage, current, and power, and show you exactly how to wire up a transistor to adjust the fan speed manually. All the parts are cheap or can be salvaged from old electronics — perfect for DIY electronics projects or learning basic circuits. We’ll cover: How voltage and current affect fan speed The basics of using a BD139 transistor Building a simple adjustable speed controller on a breadboard Whether you're into electronics repair, PC modding, or beginner DIY electronics projects, this tutorial will help you understand fan control with transistors. 🔧 Parts used: BD139 NPN transistor Potentiometer 1k resistor Breadboard and 12V power supply 00:00 Intro: Hacking a computer fan (Part 2) 00:18 Basics: Voltage, current, and power 01:07 How a transistor works (BD139 explained) 01:35 Circuit design 02:30 Breadboard prototype 03:55 Building the fan speed controller 08:29 Veroboard design 10:43 Testing final build 👉 Subscribe for more practical electronics tutorials, DIY hacks, and creative reuse of electronic components! #ComputerFanHack #DIYElectronics #TransistorTutorial #FanSpeedControl #ElectronicsProjects #BreadboardProjects