I've already written about some of the interesting components I found inside mobile phone adapters, including the inrush current limiting resistor — often a fusible resistor — and the PC817C optocoupler . In this entry, I'm focusing on another commonly used part: the S8050 NPN BJ…
I've already written about some of the interesting components I found inside mobile phone adapters, including the inrush current limiting resistor — often a fusible resistor — and the PC817C optocoupler . In this entry, I'm focusing on anot…
I started my journey to learning how to make power supply from the mobile adapter circuit. While learning what components are used has led me to PC817C optocoupler IC found inside these mobile phone voltage regulator circuit . The PC817C is an opto…
I wanted to learn more about voltage regulator, power sources, the components used in such circuits, especially the transformers, type of capacitor, inductor and resistors used etc. I had many damaged mobile phone adapter or charger and I thought I …
If you have ever worked with mobile phone adapter you may have noticed a big resistor usually in the range of 5ohm to 15ohm located at the input ac side. Many times this is the resistor which will get damaged due to overheating. One can check if th…
The SB2100 is a Schottky Barrier Rectifier Diode designed for efficient switching and rectification in electronic circuits. It is commonly used in applications such as power supplies, inverters, and polarity protection due to its low forward volt…
An induction heater works using the principles of electromagnetic induction to heat metal objects without direct contact . It's a fascinating mix of physics and practical engineering. Here’s a clear breakdown of how it works : 🔄 Basic Princip…
I am at early stage(although its 2 years now) of building a WISP(Wireless Internet Service Provider) network. And since I am deploying the WISP network in rural mountainous area. But I have realized that I need UPS( Uninterruptible Power Supply) f…
I created a simulation circuit for a KF-301(or KY-019) to analyze how the circuit works before I build one. Such module is important circuit part when powering AC household electronics and controlling using microcontroller like Arduino or ESP32. Th…
Ultrasonic sensors are powerful tools for many automation, detection, and measurement tasks. Whether it's simple distance sensing, robotics, or smart home systems, these sensors offer great potential for a wide variety of applications. Ultrason…
