Uploaded September 2020 | Updated September 2026, 2 weeks ago

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#91 There is one more topic to handle before going into the effects and that is a good alternative to battery power. In this video I look at why some power adapters are so noisy, especially when they are connected to audio equipment. And afterwards to solve the issue, I make my own version, just to be on the safe side.

Related videos
Magnetic field probe: youtu.be/l2YS1s6HxHU
LNA part 1: youtu.be/Xn9LNgVKdqI
Power supply: youtu.be/8ImywucbnKM
Active load: youtu.be/5xhLJlqCREA

Schematic:
drive.google.com/file/d/1uBKeB12Oym_iuD8jcukKlPxkjQ-0f3Th/view?usp=sharing

Used datasheets:
st.com/resource/en/datasheet/ld1085.pdf
ti.com/lit/ds/symlink/lm317.pdf?ts=1600009977641&ref_url=https%253A%252F%252Fwww.google.com%252F
global.oup.com/us/companion.websites/fdscontent/uscompanion/us/pdf/microcircuits/students/diode/1n4004-general.pdf

Other videos in the series:
Ep1- youtu.be/4n_MW0VQFfg
Ep2- youtu.be/98Jnl95DOsk
Ep3- youtu.be/Jh60m1PRcQg
Ep4- youtu.be/FsZNa6_uQMg

Special Thanks to all my supporters on Patreon! Especially @afiskon and Xegomen!

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