Introduction to Phasors, Impedance, and AC Circuits
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- เผยแพร่เมื่อ 20 ก.ย. 2024
- In this video I give a brief introduction into the concept of phasors and inductance, and how these concepts are used in place of waveforms.
Note: At 2:28 I should have said "the more COUNTER-clockwise of the two is the leader".
Animations made possible by 3Blue1Brown: / 3blue1brown
Tweeted about by 3blue1brown here: / 772904942365347840
Music is Downtown Serenade by Viikinsaari (betterwithmusic.com) CC BY: betterwithmusic...
Aren't the diagrams the wrong way round for lagging and leading voltage?
Thanks for bringing that to my attention! The diagrams are the right way, but I did misspeak so that may have been unclear. At 2:28 I should have said "the more COUNTER-clockwise of the two is the leader". I've made a note in the annotations and pinned this comment.
Thank you I was looking in the comment section for a confirmation
Right, counterclockwise is positive rotation in trigonometry and most physics, etc. unless specified otherwise.
Isn’t the waveform wrong though? The one more shifted to the left should be leading.
I came here and was like "Is this 3blue1brown?". Great video! Exactly what I needed to grasp the subject a bit.
please continue this series, your style is amazing
You really made me understand my 2-hour course in less than 4 minutes.
No he didn't. Don't lie
Thank you! So many poor videos online that fail to properly explain this in 20 minutes. Yours did it in 4 minutes.
love to see the shoutout to 3B1B. love that channel. but also great to see someone continuing in his awesome style! and doing it well!
You described these concepts really well, and it was backed by some wonderful animations! Nice job, and shoutout to 3Blue1Brown.
Just what I was looking for... accurate, precise, short explanation. Excellent job!
This was the most intuitive video I've seen for under grasping phasor concepts, it was a nice refresher to me.
3Blue1Brown , is that you ? EDIT: Just completed the video, amazing work !!
same
This is a superb video. I have not looked at material like this for many years - decades actually - and this little discourse brings it all back in a quantitative way.
Do more videos which go in depth on phasors please!! Its the first time I actually found a video on electrical this visually appealing :)
AWESOME! You totally nailed both 3Blue1Brown's style, and his ability to explain a topic in a very easy to understand way. I've been watching lecture recordings on repeat for hours and they don't hold a candle to this 4 minute video.
Explanation: 10. Music: 10. Overall Learning Experience: 10. Love the content, thanks for the immersive experience Charles ✌🏻
amazing. subscribed. I'm an electrical engineering student. Love the 3b1b tool! Keep on doing this great work
3b1b style EE videos is something I never knew I wanted until I saw this
Same feeling!
It's so strange getting to this point in my engineering education (ENGR 202, nothing crazy yet) where before this point, all we knew was DC and capacitors and inductors were basically just abstract elements that we learned the mathematical properties of. But now in AC you can see what they do to a circuit! so exciting
This was really interesting. I'm a physics student, so this take on circuitry was completely new to me. It's very cool, looking forward to more videos.
One criticism: leave stuff on the screen longer. Just another .5-1seconds makes a lot of difference and allows a viewer to digest the content.
You're absolutely right. Rewatching this now, it's going way too fast. I recorded the audio first and at times felt rushed to fit the animations/equations in. In the future I'll definitely keep your feedback in mind!
@@crclayton I actually recommend you not do that. The shorter video length makes it more tempting to click and most people just pause if they need a second to look. It's also very annoying when you already know a lot of it and you're waiting for the part you need but the picture won't change, especially when cramming before a test.
Simply rewatch the video 5 times :D .
@@ericsherwood160 half a second to a full second isn't that much extra time, meanwhile it took me 3 tries to pause on the vector form of impedance lol.
I am begging you man to make more videos on this topic. I really like this work, and I hope you will continue because you help so much. Please
This was really really helpful😭😭thank you, and super interesting too, was looking for more videos on AC on your channel, but didn’t find any, wish you had more, you’re really good at explaining 😊thanks for this video super helpful you have no idea
Excellent tutorial video, thousands of times better than my instructor’s explanation.
Please make more videos like this! I can definitely see you gain a following and supporters. Thanks for the video concise and informative, loved it.
Excellent. Thank you so much. You have made something great, inspired by something, but you pushed it through to the fresh field of engineering. Wow.
Awesome job with the video, man. I ran away from electrical engineering because things like these scared the crap out of me.
This video actually helped to make some of those nebulous concepts feel straightforward and intuitive. Thanks =)
Keep up the good work!!!!
I had given up on AC entirely since high school, and came just to see formulas but holyy mother- i finally get it TvT
Thank you for making this video! It's so helpful
This is the best way to teach concepts. Thank you for using this style for teaching.
Really like the use of the animation software that 3b1b uses
They are really angels on earth 😊
please do, i love this as much as Grant's videos. We need more videos like this and yours!
best explanation on TH-cam, awesome
this guys giving off 3 blue 1 brown vibes...
This is the sexiest animation I've ever seen.
"Empower the world with your spark of innovation, and let the current of your passion illuminate the path to a brighter, electrifying future in electrical engineering."
i wish everybody copied 3b1b's style of videos. instead everyone's copying khan academy.
charles is using manim, 3b1b's animation framework. but... yeah i agree. khan academy's format is trash.
well tbh this format requires more work
I can't do Khan's constant repeating himself. Shit is too annoying to deal with
I like them both, Khan and 3b1b
3b1b originally worked for Khan Academy so his style is just an evolved setup to theirs
Maaaan, please keep up the good. The video is excellent, you really did good job in terms of explaining.
this is beautiful
You, Sir are the beyond amazing!!!
Agree with the comment below, pls leave the animations on the screen longer so viewer can digest. Fantastic animations though. I'd drop the background music, I found it distracting.
Your method of explaining is top notch. Great vid!
THIS WAS THE MOST INFORMATIVE VIDEO EVER GOD BLESS SAVED ME PAGES AND PAGES OF READING
Thanks a lot man, I love the animation and conciseness
Super cool, I like that 3b1b' style
Would be great if you did a whole playlist in Electrotechnics.
This is so helpful and clear!! Thank you thank you thank you!! 😭😭
Your waveforms (two sine waves) are around the wrong way in your explanation of lagging and leading. The words and phasors are ok. For example at 2:23 when V is at its peak, I is yet to get there, so voltage is leading (by convention time is positive to the right) which is not what you intended. Similarly at 2:38 the waveforms depict lagging voltage.
very good video, thank you
This was super useful, please make more!
We need more AC circuit videos!! Great video Btw (:
Thank you.
man this was soooo goood , thank you
Amazing video, thank you SO MUCH!
Thank you so much, this video is superb.
Bravo!
wonderful. thanks a lot. i mean it. :)
great video
Excellent video.
Great Background Music
Thanks!
Thank you for the video. I have a question, isn't impedance a complex number and not a vector value?
Thanks. From Bangladesh.
how did u explain this so smoothly?
the amplitude of the phasor can be the peak values ; they dont have to be rms
nooooo where were the "future videos"? :( This was such a great video
My whole half trimester in 3 min :)
great background music btw
Not sure why Xc is negative... the angle will take care of lag
just came across your channel! great stuff!! subscribed :)
I took Circuits 1, and no one ever told me about electric signals or phases. Now I have to know what these are for Energy Conversions class. Now I have to search the internet far and wide for what anything is.
It’s helpful to think of passive electrical circuits in the context of the duality of nature.
I. e. electricity and magnetism.
The charged capacitor stores energy in the form of an electric field or E field.
The current conducting inductor stores energy in the form of a magnetic field or B field.
It’s important to realize their steady state behavior in circuits powered with DC power source as follows.
Inductor behaves primarily as a short circuit.
Capacitor behaves primarily as an open circuit.
It’s when their AC behavior is observed and studied in the time domain that phasers are introduced for analysis purposes.
thakn you so much
Do you work with 3Blue1Brown? Your videos use the same animations and music, so I was wondering if you guys helped each other out.
Hi Charles , I like your lecture
Voltage and current are scalars. While "phasor" is short for "phase vector," the phasor is actually a complex number, and complex numbers are scalars, not vectors!
Nice vid. :)
this video was so goooddd
if the output of voltage of RL circuit is taken to be the voltage across the inductor, the circuit is said to be what
awesome video. Did you use manim yourself?
Hi Charles, Ilike your lecture
OMG THANK YOUUUU!!!
as a math lover; my first reaction to EE's "j" for imaginary numbers was
whyyyyyyyyyyyyyy
I come from a math/physics background and have been diving into electrical engineering for a while. At first I absolutely hated the 'j' notation, but I've grown accustomed to it. Now I actually prefer it because I think more in terms of circuits, AC, and EE. It helps to keep a distinction and I only use 'i' for strictly mathematical things like fourier transforms and such.
Amazing
Oh damn that's aesthetic
hi sir im one of the final year students majoring in chemistry, just wanna say my gratitude for making this video, u just save my ass
What do you use to make this animations? Or did 3B1B make them?
I made them by writing them in python using the manim tool developed by 3b1b.
I know this is late but I feel like keeping text for a bit longer and pausing could have been nicer
But why we need to take complex numbers here??? can't we just do it with Cartesian XY Plane and without using complex numbers ???
what are the advantages and the intuitions ???
It makes calculations easier if you understand it.
for example you can represent everthing in terms of e^(itheta)
1:42 why the complex plane specifically ?
Man, it's a really good video, but even with your correction, I believe you still have the waves plotted backwards at the "leading and lagging" section. If voltage is "Lagging", that means that it hits its peaks and zero points AFTER the current hits its peaks and zero points. So visually the voltage wave should move toward the right of the current in a capacitive circuit. So for a purely capacitive circuit, the voltage waveform would be shifted to the RIGHT because it hits its peak 90 degrees after the current. In a purely inductive circuit the voltage wave would move to the LEFT of the current because voltage should peak first, followed by the current peak 90 degrees later. I urge you to do a couple google image searches to confirm this for yourself. I know it's confusing because you think "oh voltage is lagging, so it goes behind the current", and it's natural if you're reading right-to left that something lagging behind feels like it should go "behind" the other wave. But I'm about 87% sure you have your waves backwards in that section.
Wait when calculating impedance for capacitor don’t we still just add 1/jwc, every question I’ve done doesn’t subtract.
The impedance of a capacitor is 1/(jwC). 1/j is equal to -j. Thus we can also rewrite it as -j/(wC).
Thanks alot 🙏
Grant shared your video on twitter
I see that you represent the magnitude of your phasor using RMS value of voltage. I see in other literature that the magnitude is instead the peak voltage. Which one is correct?
In Electrical Engineering Context, the RMS value is often used to define sinusoidal voltages and currents..
I saw that too. What he actually showed was the peak to peak voltage and 0.707 times the peak to peak voltage. Vrms is 0.707 * Vpeak. Forget about peak to peak voltage. What we measure with a meter is Vrms.
Excellent video. Would love more videos that explain the calculations surrounding phasor triangles, please. I am doing a foundation degree in electrical engineering and there is a slight language barrier with the lecturer and note are not very clear. I have dyslexia and find learning from videos like this much easier to understand. If you have any recommendation please pm me. Ananimation to explain how a generator with delta and star connection for example. Thank you.
Yeah, agree on having a calculations explanation part.
Hi, I like your lecture
3blu1brown style!!! how???
physics 3blue1brown
Make more videos !!
wow
Use \sin{2\pi...} in Latex
Is the code for this open source?
Hello could you test this software? come upon androidcircuitsolver on google