I Built my own Power Supply (don't do it)

In this video, Linus and the team explore the audacious idea of assembling a DIY power supply from off the shelf components, driven by curiosity and a desire to understand what makes a good PSU. The discussion opens with a framing that a fully functional, safe, and reliable power supply requires more than a simple collection of parts, highlighting the missing AC to DC conversion stage and the critical role of proper filtering, regulation, and cooling. The hosts dissect several design approaches, including stacking multiple pico PSUs and sourcing high-current 12V bricks, and explain why these shortcuts commonly fail to deliver stable, safe power for a modern gaming PC. They also contrast the DIY approach with a mainstream, commercially engineered PSU from Seasonic, emphasizing reliability, heat management, and long-term efficiency. The narrative then pivots to a real-world experiment: salvaging a PS3 power supply, modifying it to deliver 12V via banana plugs, and powering a PC to test performance and safety in a lab setting. Throughout, the video blends hands-on build steps, safety warnings, and lab results to illustrate what happens when a non-traditional power solution is pushed to its limits. The conclusion reframes the question of value, noting that while the experiment demonstrates feasibility, the effort, risk, and potential inefficiencies make a commercial PSU the wiser choice for most users, with Seasonic’s newer, more efficient designs offered as compelling alternatives. From these insights, viewers are left with practical takeaways about voltage regulation, component quality, heat dissipation, and the real-world costs of DIY power conversion versus trusted brands like Seasonic.

Topics · technology · education · lifestyle · gaming · electronics · safety · lab-testing