PSU

A power supply is an electrical device that supplies electric power to an electrical load. The primary function of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power. Examples of the latter include power supplies found in desktop computers and consumer electronics devices. Other functions that power supplies may perform include limiting the current drawn by the load to safe levels, shutting off the current in the event of an electrical fault, power conditioning to prevent electronic noise or voltage surges on the input from reaching the load, power-factor correction, and storing energy so it can continue to power the load in the event of a temporary interruption in the source power (uninterruptible power supply).

Main Content

Micro Breadboard Power Supply

“A small Micro USB connected power supply that is designed to fit onto the power rails of a standard solderless breadboard. Inspiration While working with some of the more common breadboard power supplies that are available, I was always wanting …

Variable Breadboard Power Supply

“Power supplies are the most basic tool every DIY / maker / electro-enthusiast should have. While the lab bench power supplies are great but you can’t carry them everywhere and that’s why you need a portable power supply, but they …

2x 48V 5A Bench Top Power Supply

“This is a tutorial for assembling a bench top power supply. Don’t expect any electronics development or lots of soldering, I just ordered some parts from AliExpress and put them in a box. Please beware that I made some …

DIY Mini Lab Power Supply

“A bench power supply is extremely useful for electronics hobbyists, but they can be expensive when purchased from the market. In this Instructable, I will show you, how to make a mini-lab power supply with a limited budget. It is …

Small Portable Variable Power Supply

“Idea is to make small cheap portable variable power supply for hobbyists. It main purpose is to test some electronic components or to power some projects in their early development or for POC stage. Parts used in project are: - Digital …

USB-C Powered Bench Power Supply

“A bench power supply is an essential tool to have when working with electronics, being able to set the exact voltage your project needs and also being able to limit the current for when things go to plan really useful …

Project  Elelab_v2

Elelab_v2

“This is a low cost, modular elctronics lab system for hobbyists. The customizable modules include fixed and variable power supplies, measurement tools, component testers and much more. Everything in here is done with open source software, including FreeCAD for all …

Digital Controlled Linear Power Supply

“In myteenage years, about 40 years ago, I created a dual linear power supply. I got the schematic diagram from a magazine called ‘Elektuur’, nowadays called ‘Elektor’ in The Netherlands. This power supply used one potentiometer for the voltage adjustment …

Simple and Small Programmable Lab Power Supply

“Any workshop must have a good lab power supply. Somehow it happened that a PC power supply was always enough for me. But when power was needed at 30, 40 and 50 Volts, the situation slightly changed. After a short …

Covert ATX Power Supply to Bench Power Supply

“A bench power supply is necessary when working with electronics, but a commercially available lab power supply can be very expensive for any beginner who wants to explore and learn electronics. But there is a cheap and reliable alternative. By …