Power supply

[daniel123]

Does anyone have instructions on how to make a variable power supply. If you do I cant read schematics yet so I would need a picture of the board and step by step pictures.

Thanks Daniel

[ZeTeX]

Learn schematics, it will take you a week max if you have passion for electronics.
You cant build circuits without the ability to read and draw schematics, but it is easy as sitting on a chair.


Also, what do you want from your psu? what voltage range? what current range? linear? switch mode?

[SewingYard]

I'm not great at schematics but I put the following board together quite easily after playing with it on the breadboard first:

https://electrosome.com/variable-power-supply-lm317-voltage-regulator/

First get a transformer and learn how to make a full wave bridge rectifier with it

Next learn about the LM317 (don't forget the heat sink) then connect the two fragments together.

I'm a real newbie so maybe someone else knows how to do it better but this was my take on doing it as a complete beginner.

[danadak]

Being new to electronics the most important element to learn is personal
safety when working with electricity, especially line rated voltages that come
out of your wall socket.

Google and Youtube electricity/electrical safety and read/watch. This is a part
of all EE and Tech training in the first lab classes they take.

You mention in anotehr post you do not learn reading. The world is largely
split into visual and audible learners. So the toughest thing is quickly figure
out how you learn. That can be tested for by specialists. Maybe your school
would provide that. The reason I discuss this is most learning in the electronics
world is in a huge body of written books, application notes, papers.

I began reading electrical stuff at 11, and still read almost every day something, even
if it is only a paragraph or two. Thats what worked for me, I am a visual learner.

Initially much of my reading I did not understand, but bits and pieces became lodged
in my memory, and over time relationships between the pieces began to develop.



Regards, Dana.