2023-05-14

[public] 177K views, 21.2K likes, dislikes audio only

GreatScott!

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Previous video: /youtube/video/OWEU1eR3Tyw

AliExpress video: /youtube/video/NjNOGm3sCOQ

Capacitor video: /youtube/video/2v8zBj7_sxg

Inductor video: /youtube/video/hYOtx_2hYTU

Filter video: /youtube/video/1wzUqVFyQ7o

You can get the mentioned products and capacitors here: (affiliate links)

Power Supply: https://s.click.aliexpress.com/e/_DmzJv9f

5V UPS: https://s.click.aliexpress.com/e/_DcQteFr

Mini Boost Converter: https://s.click.aliexpress.com/e/_DCwYdwh

Capacitors: https://www.mouser.de/ProductDetail/Samsung-Electro-Mechanics/CL32A226KPJNNNE?qs=sGAEpiMZZMukHu%252BjC5l7YYSaqHT4BB0iHXlLVxBE%2FL8%3D

https://www.mouser.de/ProductDetail/Samsung-Electro-Mechanics/CL31B105KAHNFNE?qs=h6Piwd%2FnvzliA%252BKuhKdPjw%3D%3D

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Support me for more videos: https://www.patreon.com/GreatScott?ty=h

Websites which were shown during the video:

https://www.prodigit.com/show/how-to-test-noise-from-the-output-of-power-supply.htm

https://www.meanwelldirect.co.uk/glossary/what-is-output-noise/

https://cdn.hackaday.io/files/1829407826904960/Xysemi_XR2981.pdf

https://www.ti.com/lit/an/snva871/snva871.pdf?ts=1682880670833&ref_url=https%253A%252F%252Fwww.google.com%252F

https://www.ti.com/seclit/ml/slup384/slup384.pdf

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