Best way to learn electronics? - Page 1
Forum section: electronics / general

author: MONODA
author_rank: Contributor
timestamp: July 14, 2012, 04:32:04 pm
content: So I just finished my first year of undergraduate electrical engineering study and feel like I don't know nearly as much electronics as I like or am willing to learn.For the past couple of months I've been trying to teach myself by reading electronics magazines (Talking Electronics being one of them) and other articles here and there rather than learning from a text book. My concern is that I could be using my time a lot more effectively by solving exercises and working through textbooks. Especially considering I will have to in the coming years of my education.What do you guys think?

author: McMonster
author_rank: Frequent Contributor
timestamp: July 14, 2012, 06:39:31 pm
content: Build circuits and blow stuff up. Theory itself is not enough if you don't understand it enough to build any usable circuit.

author: T4P
author_rank: Super Contributor
timestamp: July 14, 2012, 06:43:37 pm
content: Quote from: McMonster on July 14, 2012, 06:39:31 pmIronic you say that, i just blew up a laptop cooling fan as a final farewell to send it straight to afterlifeLots of smoke and it stank for 1 hour10 secs ~7V, 5 secs ~30V, the rest 14V-16V 0.7ABut still, interesting that the hall effect sensor gave out a shitload of smoke

author: free_electron
author_rank: Super Contributor
timestamp: July 14, 2012, 07:46:34 pm
content: not a good idea to stink up the place with fried semiconductors..That carbonized epoxy is not very healthy , let alone the dopant used in the chips...Anyway, reading books does not make you an electronician , just as it wold not make you a mechanic.you need to do things. take things apart , build things, repair things.

author: IanB
author_rank: Super Contributor
timestamp: July 14, 2012, 08:21:26 pm
content: An especially good idea would be to build things from a plan or existing design, then understand how it works, then modify it and improve it. You can learn a lot by example.

author: Colin55
author_rank: Contributor
timestamp: July 14, 2012, 09:35:43 pm
content: The best way to learn things is to build lots of projects.Colin MitchellTALKING ELECTRONICSI only really started to learn electronics AFTER finishing an electronics course.

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: July 15, 2012, 02:44:21 am
content: Quote from: IanB on July 14, 2012, 08:21:26 pm+1And once donedraw the circuit, date it, note its source and put it in your 'own projects' file. Leave room to note any modifications or when you pulled it apart.If it could interest others write an article, tell us about it here and/or do a YouTube video.Peter

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: July 15, 2012, 03:03:50 am
content: Quote from: MONODA on July 14, 2012, 04:32:04 pmWhy not try both, eg through designing and building some basic test gear? Or any project where you need to work something out, using a formula, for it to operate.In the past one might have build one's own voltmeter or ammeter with an old meter movement, but there may be little functional need unless you want the swing of an analogue movement or need a specialised instrument to measure extremes. The design of this would have required Ohms Law exercises similar to but more practical than in the textbook.A bit more complex but possibly more useful is a low value inductance or capacitance measuring instrument. There's various methods, but something including a crystal oscillator, LED output indicator and the (adjustable) tuned circuit under test works for me. Formulas that could be useful for this include the one that calculates the resonant frequency from L and C. Enhancements could include adding extra measurement ranges.Peter

author: Psi
author_rank: Super Contributor
timestamp: July 15, 2012, 03:21:16 am
content: Make stuff, seriously, it's more important than the theory imho.Don't try to start with a super complex project. However what you can do is build complex stuff out of existing modules. eg, a power supply module, a RF transmitter module. etc.You do learn important stuff trying to join things together and it's a nice feeling to know you can build almost anything using this technique, even if you don't have all the theory quite nailed down yet.It's not necessary to 'reinvent the wheel' every time you need a circuit, and trying to do this (especially early on) can lead to giving up the entire project. Which is what you want to avoid happening at all costs.Once you've finished a few projects (and know how awesome it is to finally finish stuff) you will look forward to this feeling again and it will motivate you do finish harder projects.

author: szhighstar
author_rank: Contributor
timestamp: July 15, 2012, 03:29:28 am
content: step by step, theory guides practice, practice verifies theory, continue to raise level at the loop.

author: vk6zgo
author_rank: Super Contributor
timestamp: July 15, 2012, 05:57:52 am
content: Quote from: MONODA on July 14, 2012, 04:32:04 pmAs IanB says,build some stuff from other people's designs.Once you get a feel for things,start analysing why the designer used a particular component or technique.Often it isn't very "high tech",it just happened to be the part lying on the bench!If you can,"Tear down" some Commercially made equipment,whilst looking at the schematic,if available,to determine how things are built in the real world.After a while,you will notice that Manufacturers don't always strive for unique design,--If a Sony circuit looks a lot like a Philips or Sanyo circuit,is that a bad thing?Many EEs,or would be EEs on this forum will advise you to "design something".My problem with that,is that if you don't have a feeling for how things are done,you may get tied up trying to "design your way around" problems which someone sorted out in 1936!As you are at Uni,don't neglect the wonderful resource you have in the University Library.If your present knowledge doesn't give you an answer,look in the Library first,before you "Google",or ask on a forum.You may get an answer to your direct question on the 'Net,but a book will often answer other secondary questions,& give you more background on the subject.I was a contract Tech at UWA for a while,& one of the things I had to fix was a Nuclear Magnetic Resonance instrument.Well I didn't know a thing about NMR,so I had a look at the Library,& there was all the information I required to make intelligent guesses about what the fault was.

author: EEVblog
author_rank: Unknown
timestamp: July 15, 2012, 08:01:21 am
content: Quote from: Colin55 on July 14, 2012, 09:35:43 pmHey Colin, great to see you on the forum, welcome!Dave.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: July 15, 2012, 11:51:58 am
content: Find some junk electronics and take it apart - try to figure out how it works. See if you can re-use bits for other interesting purposes.

author: bullet308
author_rank: Frequent Contributor
timestamp: July 15, 2012, 03:24:45 pm
content: An idea: take an interest in a hobby or some-such that relies on electronics and then master the electronics aspects of that hobby.For instance, I play with Geiger counters and other radiation detection gear. Other natural points of entry are RC aircraft or cars, robotics, ham radio, home automation, astrophysical or the whole maker/Arduino scene.Seems to be working okay for me.And all of the above as well.