Electronics > Projects, Designs, and Technical Stuff

Help with how this PSU works. (With revised design)

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Evangelopoulos Panagiotis:

--- Quote from: xavier60 on May 12, 2020, 10:41:27 pm ---About the Pot I can't say until the other problems are corrected in the schematic.

--- End quote ---

It's a bit late right now so I'll change the schematic first thing in the morning. I'll change the D10 and make sure the rest of the connections are ok.
Thank you for the help so far,
E.P.

xavier60:
I dislike seeing Pots used as rheostats or VRs. The simplest way I could figure to avoid it meant using a negative reference.
https://www.eevblog.com/forum/projects/lab-power-supply-the-lost-current/?action=dlattach;attach=400354

aheid:

--- Quote from: xavier60 on May 12, 2020, 10:05:13 pm ---I can't see the labels clearly. Can you post it with higher res?

--- End quote ---

I forget not all have LTSpice :) See attachment. R12 was just to separate the connections in the sim to make the labels on the graph clearer. Note that I tried to make this as a faithful representation of the original schematic.

xavier60:
That looks right.

Evangelopoulos Panagiotis:

--- Quote from: xavier60 on May 12, 2020, 10:41:27 pm ---About the Pot I can't say until the other problems are corrected in the schematic.

--- End quote ---

Ok I think I corrected everything. It's almost the same as the original.

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