
Power supply unit (computer) - Wikipedia
A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a desktop computer. Modern personal computers universally use switched-mode …
What Is a Power Supply? - Computer Hope
Dec 2, 2025 · Explore the role of a power supply unit in powering computer components by converting AC into low-voltage DC. Learn about its parts, safety, and buying tips.
What is Power Supply Unit (PSU)? - GeeksforGeeks
Jul 23, 2025 · Power Supply Units (PSUs), despite their name, transform power rather than providing it to systems. In particular, a power supply regulates the DC output voltage to the precise tolerances …
A Complete Guide to PC Power Supplies: ATX, SFX, TFX, & EPS Types
Jul 28, 2025 · Learn about PC power supplies, including ATX, SFX, TFX, and EPS types. Find the right PSU for you, considering efficiency, wattage, and form factors.
Ultimate Guide to PC Power Supplies (2026) - TechReviewer
Nov 5, 2025 · Detailed PSU specifications, wattage recommendations, and efficiency standards suited for gaming and workstation builds. When building a PC, the power supply unit (PSU) is often …
PSUs: Understanding Computer Power Supply Units
A power supply unit takes the high-voltage AC electricity provided by a mains outlet and transforms it into lower-voltage DC electricity that your computer’s motherboard, processor, graphics card, storage …
What Is a Power Supply Unit (PSU)? Your Ultimate Guide
Nov 14, 2025 · At its core, a Power Supply Unit (PSU) is an internal hardware component that converts the alternating current (AC) from your wall outlet into a steady flow of direct current (DC) that your …
Understanding Power Supplies: The Heart of Every Computer
Sep 11, 2025 · A power supply unit (PSU) is a critical component of every computer system, serving as the conduit that transforms electrical energy from an outlet into usable power for various hardware …
What is a PSU: your PC's power system explained - TechRadar
Jun 9, 2023 · PSU stands for Power Supply Unit, and it is the part of a PC responsible for converting the alternating current (AC) power from an electrical outlet into direct current (DC) power that computer...
What Is a Power Supply Unit? Understanding the Basics
Nov 19, 2025 · A power supply unit (PSU) is a crucial component in a computer system that converts electrical power from the outlet into usable power for the various components within the computer. It …