05 Jan 2025

Category: Electronics

Electronics

Port Hub connects many USB devices 

Today, all manufactured electronic devices take advantage of convenient USB ports. Previously, computers had one or two USB ports that would normally be inconvenient on the back of the CPU, but newer computers have several built-in USB ports. And many cases now place at least…

Electronics

How to test an optocoupler 

An optocoupler or optoisolator, is a device that contains a light-emitting diode (LED) and a photosensor ( photodetector, such as a photoresistor, a photodiode, a phototransistor, …etc ). The purpose of an optocoupler is to transfer signals from one circuit to another yet keep them galvanically isolated. Here I…