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0-30V 2mA-3A DC Regulated Power Supply DIY Kit #2

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opened 2023-02-06 10:33:00 +02:00 by arti · 1 comment
arti commented 2023-02-06 10:33:00 +02:00
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Aliexpress kit

Schematic and notes

Aliexpress kit * https://www.aliexpress.com/item/1005002420791959.html Schematic and notes * https://www.electronics-lab.com/project/0-30-vdc-stabilized-power-supply-with-current-control-0-002-3-a/ * https://www.paulvdiyblogs.net/2015/05/tuning-030v-dc-with-03a-psu-diy-kit.html?m=1
arti commented 2023-02-25 18:50:48 +02:00
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Got the kit and built it.

20230224_180646.jpg

As the Blog post told, this kit as unstable/oscillating output on mains power off. Pretty much unusable for anything sensitive.

Graph below is 10v/div
screenshot_2023-02-25-184410_grim.png

And more zoomed in on the glitch
screenshot_2023-02-25-184423_grim.png

Got the kit and built it. ![20230224_180646.jpg](https://git.wut.ee/attachments/2a0721bc-9570-4223-8b2a-a9a2d32e0175) As the Blog post told, this kit as unstable/oscillating output on mains power off. **Pretty much unusable for anything sensitive.** *Graph below is 10v/div* ![screenshot_2023-02-25-184410_grim.png](https://git.wut.ee/attachments/194ecf1c-8c12-4b3c-a1f7-dbb7b867b58b) And more zoomed in on the glitch ![screenshot_2023-02-25-184423_grim.png](https://git.wut.ee/attachments/e5f14c4c-67b4-42ab-88dd-973a5ce39b02)
screenshot_2023-02-25-184410_grim.png
15 KiB
screenshot_2023-02-25-184423_grim.png
32 KiB
20230224_180646.jpg
3.3 MiB
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Reference: arti/linear_psu#2