/diy/ - Do It Yourself

>>1884342
1) find PSU
2) disassemble PSU
3) reverse engineer PSU
4) profit $$

>>1884342
Try arduino led blinking projects

>>1884342
>electrical engineering
its a really wide field, what exactly do you want to learn/do? analog? digital? mcu? would you rather control oled screen with mcu or make a simple audio amp?

>>1884400
the digits affirm. refine your request anon.
alternatively you can pick up a copy of the art of electronics by horowitz and hill for less than $100 and get reading.

additionally, i never paid for anything when i started electronics:
old soldering iron from grandad.
eleco-junk from street.
solder things together
power up with batteries
experiment
some things go boom
slowly figure shit out.
protip: learn the basic electronic laws, ohms law, kirchoffs law, faraday's law.
t. anon in electronics industry now

>>1884406
>alternatively you can pick up a copy of the art of electronics by horowitz and hill for less than $100 and get reading
Stop suggesting that book to novices! While it's meant for the newcomers it fails at being an introductory textbook and works better being a reference book for those who already know the subject and need a refresh on a particular subject.
OP get Practical Electronics for Inventors by Scherz and Monk.

By the way I'm in your same situation and here's my story:
>first I needed a soldering station for a repair job I had to do: Ksger T12, a pack of T12 tips, iron holding base, brass wire sponge, solder, flux, solder pump
>the repair didn't go well and that made me interested in electronics (I realized I lacked the knowledge and I wanted to know more) so I downloaded from libgen both The Art of Electronics
>but it wasn't really a great book, so I tried with Practical Electronics for Inventors and I really liked it
>I later bought it since it's a really good book and it's not very expensive
>I got myself a cheap electronics fun kit (a breadboard and a few components) to mess with easy basic circuits
>making LED blink wasn't really informative and I wanted to replicate what I was learning from the book so I got myself a Hantek DSO5072P (it's the cheapest scope worth having) to see what actually happens inside the circuits
>and since I was at it I got a small signal generator
>Now every time I encounter a circuit in the book I replicate it and use the scope to validate what I'm reading. It's really fun and helps a lot the learning process.
All this sums up to around €300. Obviously if unlike me you're in a region of the world where old used oscilloscopes are sold for dirt cheap you can save around €100, otherwise that Hantek is the next best thing, and if you're fine reading books from a screen you can avoid buying the book so you can save another €30.

>>1884342
>zero experience
a beginner book on electronics. all the projects will be in it.

>>1884358
Apparently touching the wrong object in a PSU can kill you from stored energy in the capacitors. Not very nice.

>>1884684
Discharge them first with a resistor.

>>1884684
Meh, it just really hurts. Mostly won't kill you but it really hurts.

>>1884734
it could kill if your hands are wet or have hearth problems

>>1884406
>art of electronics by horowitz and hill for less than $100 and get reading.
Just buy the second edition used for $10 and live without the chapter on SMPS.

>>1884454
Art of Electronics is a great book for new comers, it actually gives you everything you need to know, but you need to be focused on the long term goal and have some dedication. It is a textbook, not a reference book, it just lacks the exercises/questions which are common in modern text books, if you need such things you can get Learning The Art of Electronics (Student Manual for The Art of Electronics for those that go with the cheap old editions) as well and you will have a modern text book experience.

Practical Electronics for Inventors is more a cookbook with a sprinkling of theory, it can be adequate for some, but it gives a rather superficial understanding, hence the 'practical.' If your goal is to understand and design, you will need to follow it up with something like H&H, it does not even give enough for one to be able to exploit H&H effectively as a reference book.

>>1884734
>>1884742
It is more an issue of having a path through the heart, if your left hand is clamped on the chassis and you discharge the cap with your right, that current goes right through the heart on its way to ground. Most consumer goods these days lack the juice to do anything more than give a good bite, unless they are also plugged in. You really should treat all electronics like they can kill or you may very well discover your bad habits in a rather unpleasant way.

>>1884789
>Art of Electronics is a great book for new comers,
it really isn't
>it actually gives you everything you need to know
terse explanations and unclear examples aren't worth shit
>but you need to be focused on the long term goal and have some dedication
"just figure it out yourself bro!"

boomers are miserable at teaching

>>1884795
The examples are clear if you understood what came before. there is nothing in the book you need to figure out yourself, it is all there. If you do not understand something it is because you skipped ahead or moved on before you were ready. If they explained every example fully that 1100 page book would be 5000 pages.

They make the companion text just for people like you.

>>1884789
>>1884798
Practical Electronics lays solid theoretical foundations, and presents all the relevant math without overcomplicating it. It is much clearer and does a better job at explaining concepts than the Art. The semiconductors part in H&H is especially messy because they start listing various kinds of circuits and explain them in a really bad way: I decided to drop that book when I realized I was missing concepts that weren't previously explained. For now, Scherz&Monk is a way better introduction to electronics hands down. I especially like how they go over their way to make everything absolutely crystal clear, like with the water analogy that can be found through the book. In contrast I hated with a passion how (((Horowitz))) constantly pitched The X Chapters in the slew of footnotes they use, it was like a commercial break every other page; also, fuck all those footnotes.

P.S. A textbook that needs another textbook to explains it is a bad textbook.

>>1884342
I don’t do any engineering, but I started doing electronics repairs a few months ago. So far, I’ve been learning new skills with specific tasks in mind that I previously didn’t know how to do. I have a bachelor’s degree in biochemistry with a pretty good foundation in physical chemistry, so I didn’t do any reading on theory or anything before jumping into watching youtube videos involving technique.
>needed to replace internal batteries inside my a GBC game cartridge
>fug.exe
>learned how to desolder, apply flux, and solder components onto a PCB
>dug up my old GBC, but it was filthy and I wanted to give it a backlit screen
>hmmmm.bat
>learned how to carefully disassemble ribbon cables, clean shit with IPA and soap, and put shit back together
>mom was renovating her camper RV and asked for help with replacing the lights
>ok.mp4
>learned how to extend wires and join two wires together
I have a side hustle now fixing iphones for normies, and it was built from the accumulated practice of working on gameboys and other handheld consoles.

>>1884822
what about the https://www.allaboutcircuits.com/ textbook?

>>1884342
i skippped the books and watched a shitton of GreatScott videos. half the time i didnt know what he was talking about, but after a few small projects, i began to catch on.

>>1884822
>Practical Electronics lays solid theoretical foundations, and presents all the relevant math without overcomplicating it.
As I said, it is a cookbook with a sprinkling of theory.
>P.S. A textbook that needs another textbook to explains it is a bad textbook.
Most don't need it, as I said, it is for special people like you.

>>1884408
>That one socket that's mounted upside down

What's that you're working on anyway, some sort of ICT or automated test rig?

>>1885123
>As I said, it is a cookbook with a sprinkling of theory.
You say it like it's a bad thing.
>Most don't need it
[citation needed]
>it is for special people like you
Sure you must be a real big boy to understand everything on your own. Why are you even wasting your supreme intellect on this Nepalese Gunyo Cholo weaving forum? You should be at NASA earning a nobel or something.

>>1885290
>You say it like it's a bad thing
No i didn't, it can be, depends on your goals. As i said, it can be adequate for some but gives a superficial understanding.
>[citation needed]
You can compare the sales stats of the two books if you need a citation, should not be hard to find.
>Sure you must be a real big boy to understand everything on your own.
If I understood everything on my own I would not have needed the book. Can you at least try and make sense?