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

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 …

Adjustable Double Output Linear Power Supply

“Features: - AC – DC Conversion Double output voltages (Positive – Ground – Negative) - Adjustable positive and negative rails - Just a Single-Output AC transformer - Output noise (20MHz-BWL, no load): Around 1.12mVpp - Low noise and stable outputs (ideal to power Opamps and Pre-amplifiers …

Portable 3,3V/5V Power Supply

“In this project I present you the power supply module I use mainly for my ARDUINO projects. Basically the circuit use a 3,7V 1800 mAh Lithium battery connected to a breadboard power supply module This configuration give us a …

97% Efficient DC to DC Buck Converter - 3A, Adjustable

“A tiny DC to DC buck converter board is useful for many applications, especially if it could deliver currents up to 3A (2A continuously without heatsink). In this article, we will learn to build a small, efficient, and cheap buck …

Linear Variable Voltage Regulator 1-20 V

“A linear voltage regulator maintains a constant voltage at output if the input voltage is greater than output while dissipating the difference in the voltage times the current watts of power as heat. You can even make a crude voltage …