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You can get the mentioned products and capacitors here: (affiliate links)
Power Supply: s.click.aliexpress.com/e/_Dmz...
5V UPS: s.click.aliexpress.com/e/_DcQ...
Mini Boost Converter: s.click.aliexpress.com/e/_DCw...
Capacitors: www.mouser.de/ProductDetail/S...
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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