Try the world's most trusted PCB design software, Altium Designer with 365, for free and 25% off your purchase: https://www.altium.com/yt/greatscott! (AD, Paid Promotion)
0:00 The Problem of my AliExpress Products 1:16 Intro 2:04 Why is Noise/Ripple Bad? 3:39 How to Measure Noise Correctly 4:32 5V UPS Noise Problem 5:46 Solution 1: Post Regulation 7:51 Solution 2: Component Improvement 8:39 Capacitor Replacement 9:55 Other Component Problems 10:49 Mini Boost Converter Fix