EEVblog 1399 - Electronics Fundamentals: Voltage Dividers

Fundamentals video. Voltage dividers, series and parallel resistors, current dividers, a revisit of Norton and Thevenin's theorems, rules of thumbs, and a demonstration of circuit multimeter loading and a trap for young players.

00:00 - Intoduction to voltage dividers
01:33 - Uses of voltage dividers
04:27 - Rules of thumb
06:55 - Calculations
08:57 - Current dividers
10:56 - Let's revisit Thevenin & Nortons Theorems
17:29 - Demonstration of a trap for young players

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#ElectronicsCreators #Fundamentals #Tutorial

[dr_davo]

I teach at a University, and I show your vids to my freshman class. I also make vids for the entire EE curriculum, but in my opinion - having multiple sources of info from places all over the world help students learn way better than pushing to read a single textbook.

[Fordgpwocalafl]

These are my favorite videos just like the old ones because of you I understand opamps!

[airmann]

Don't care how simple any of these fundamentals are, I love the 'fun'damental vids.

[hopelessnerd]

Even if you think you know something well, watching a refresher like this is always good. You never know what shortcut you might pick up. Thanks Dave!

[whitefields]

Dave, every day is a school day. Even when you think you know what you need to know there will be new insights from a new teacher. Please keep doing these fundamentals vids.

[stevedaenginerd]

Thank you so much for continuing the fundies series! I thought I had a good understanding of these concepts, but now I feel like I have a better and deeper understanding. I feel like I just upgraded my tools! lol

[amratsingh]

EEVblog Fundamentals videos is what I live for. ❤

[robsdeviceunknown]

I took Computer Electronics back in 1989. LOVED it but ended up going a different route in my career. Now that I'm retired I am getting back into it for fun so these videos will be a life saver. So sorry to those that think this is too basic of info. For me it's astrophysics atm.

[BitThoughts]

Man, I wish I had a teacher like you in high school.

[Seiskid]

The 10% 1% 0.1% rule is useful. I've been doing this a long time but hey never thought of this before. Its a winner.

[bertblankenstein]

"Resistance is futile." Ok now that that is out of the way, thank you for another fundamentals video.

[TheEmbeddedHobbyist]

Well done, the meter error due to input impedance is something that gets missed in the YouTube uni class's.

I can remember having to work out the affect the meter would have on the reading, then taking the readings and checking to see if the reading was as expected. so you knew the circuit voltage was correct. Avo MK8 great place to start with you measuring kit, you had to know by how far out your reading will be.

[thomasesr]

"Anywhere I go, every place I look. All I see is voltage dividers everywhere"

[JosepsGSX]

Thanks a lot for this back to basics sessions. I'm on the uneducated side, learning electronics as a late hobby, and these lessons are quite helpful and interesting.

[michaelmccarty]

I am an amature who recently dropped the $$ for the "Art of Electronics" (and the lab guide). This was so helpful, thank you!

[jardel_lucca]

Please keep posting these fundamentals videos!

[jackevans]

15:15 ". . . don't want to piss away power" Love the Aussie vernacular.

[MichaelClark-uwex]

Playing with 555 timers and the voltage divider built into them is a great way to understand them.
In fact some people say the 555 timer is named for the series of 5k resistors in the built-in voltage divider.

[Basement-Science]

In my opinion learning about voltage dividers early like in schools, you never have any idea what they are even good for and may think they are pointless. That is, unless you come to the wrong conclusion and think you can just power your whole circuit from them.

In this video I think you've both shown how they work and simple, practical examples where you encounter them. That's how everything should be taught!

[Sahilkhan-jdfz]

You are an angel for me from whom I am going to learn a lot. I am obliged to get these free lesson.