With Just $0.50 Components I turned Garbage Products into GOLD!

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Previous video:    • Using the 4G Network to Save my Frien...  
AliExpress video:    • I tried finding Hidden Gems on AliExp...  
Capacitor video:    • How to choose the right capacitor typ...  
Inductor video:    • How to choose the right coil type (in...  
Filter video:    • Does a DIY Audio Crossover make sense...  

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

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Websites which were shown during the video:
https://www.prodigit.com/show/how-to-...
https://www.meanwelldirect.co.uk/glos...
https://cdn.hackaday.io/files/1829407...
https://www.ti.com/lit/an/snva871/snv...
https://www.ti.com/seclit/ml/slup384/...

Thanks to Keysight for sponsoring this video.

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