What is a Capacitor? Learn the Physics of Capacitors & How they work - Basic Electronics Tutorial
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- čas přidán 19. 06. 2024
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In this Lesson, you will learn what a capacitor is and why they are important in electrical engineering. You'll learn how capacitors are constructed, how they are used in circuits, and how energy is stored in a capacitor. At the end of the lesson you will understand exactly how capacitors work.
We will discuss the electric field inside of a capacitor, and how that field along with the dielectric determines the capacitance in the circuit. The physics of capacitors is not hard to understand, and we will discuss all of the details in this basic electronics tutorial course for beginners..
suffered with this for years. skipped chapters out of fright. avoided discussions out of shame. and finally finally i saw this video..thank u sir :')
are u there?
Before I watched this video I knew nothing about capacitors. You made a very coherent diagram and you explained it very well! Thumbs up!!
I wish I'd had this tutorial when I was managing a Radio Shack store beginning in 1974. The company trained us to sell but not understand what we were selling. Radio Shack's theory was that if we became too knowledgable, we'd talk ourselves out of a sale. What the fuck did that mean? I had walls full of transistors, capacitors, resistors..the entire electronic display of goodies yet, it was up to my own devices to understand just what the hell each did. I had to depend upon a few of the electronic geniuses who shopped my store who were generous enough to educate me in order that I be capable of more than simply pointing to the area where parts were inventoried. At the end of my first year, it dawned upon me that corporate America wanted nothing more than dolts running its facilities...and Radio Shack was but my first experience with managed ignorance. In 1979, I was hired by Procter and Gamble as a pharmaceutical rep and it was the same old shit all over again...just reguritate the pitch and don't worry the fact that while talking to doctors all day long you didn't know jack shit about the product. No wonder I did so much coke...after all, it did save me from acknowledging the fact that I was a fucking corporate fool.
First rule of business: Know your product!
At least you got high.
Yeah, I did get high...that's a fact. Just wish I'd saved a bunch. The crap today is genuinely toxic.
Good
+robert glenn i completely understand this and feel your anger, the same thing is happening in canada and our schools.
To be fair, it's against companies interests for employees who aren't qualified to be talking about those things, especially in the case of pharmaceuticals. Unqualified employees giving medical advice is a great way to attract lawsuits.
The radioshack case was just a bit stupid though. What's disturbed me is the general ignorance of people. I have far more ties to the restaurant industry, and it is baffling how many people, including owners, even when they have oversight, grossly misunderstand basic food safety and sanitation. To the point where they're genuinely ignorant that they're putting customer's lives at risk.
Studying for an exam without lectures, gosh this is a lifesaver! Thank you!
Great approach and fantastic analogies. I have watched several tutorials and this one (by far) really hit home. Thank you
For me this lesson was absolutely perfect and left me with a good understanding of what he was teaching
I watched a lot of video on capacitor but this was best...people may explain the topic but there 's always some doubt..but u caring about each point made it clear...u have good teaching skill..I am in 12 th standard...thnx
keep making videos...and keep helping student😊😊
It makes me glad to be saving to buy Jason's courses. He really makes them count. These lectures are pure gold, and I promise you that you will not have them expalined this way in any University. Ever!
Amazing explanation, thank you so much!
understood it thanks
Many thanks for this video. Worth the fifteen minutes, as I now understand the basics of a capacitor.
Watching this on Friday, August 18, 2017. I think you did a good job. A much need refresher bit, that electricians and electronic tech. or HAVC tech should watch. Thank you for keeping it posting on CZcams.
Thank you very much Mr.Jason for describing about Capacitor which I had no idea.
Thank you very much, by exaggerating the size of the conductor, your really created a hook that helped me pay close attention to what you were trying to say.
2:32 This is true for most low power electronic circuits, where you'll mostly be using medium to very small capacitances for voltage smoothing; evening of potential for reliable power and performance. But I would like to expand on this. There are actually decently sized supercapacitors which can have capacitances of hundreds to thousands of farads! Some people even make cells of capacitors to deliver power instead of common batteries. They have some different properties such as very low internal resistance, so it can deliver a LOT of power really fast.
Thanks mate, you are so much better than my lecturer in my 'world-class university'. I understood everything, perfectly clear.
This was really helpful! Thank you so much! :)
this was probably the best explanation about capacitors I ve ever come across
another case of better clarification than in college twenty years ago....thanks
This man is an excellent speaker. Very informal clear video, unlike some others i found online which weren't so descriptive.
I really appreciate it!
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I wish you were my teacher. 😀 greetings from Mexico!
You have a great way of explaining!!! I wish you have success in what you do!!!!
Love it. I hope more of Engineering. It's always nice to go back to basics.
this.is.awesome.
thank you!
Amazingly explained thank you, keep it up :)
I swear to god this is THE best explanation of capacitors I have ever heard. Thank you so much
The curved plate indicates that the capacitor is of an electrolytic design. The implication of that is that if you hook it up backwards it will probably explode. For this reason you never subject it to alternating currents. The most common is as DC filters in power supplies to remove ripple after rectification.
This is a fantastic series. I see that he is bringing calculus into the instruction in Lesson 9. Once you get into RLC circuits then you will need differential equations. Oh how I love Eulers.
Many people don't understand why they had to take algebra in high school. Algebra is just a stepping stone to calculus. Calculus is where all the magic happens. The power of calculus is absolutely incredible.
It all sounds super easy, just, eh, obvious. I'm confused why I couldn't get it myself for such a long time. That was the most effective 15 minutes in my whole life. Thank you.
Great detailed explanation Thank you
I like how the guy dumbs it down, for us slow people.
same
worxharder Wow, I don't feel so good about myself anymore
Lol.
Heuhuehuehue
tech school concentrated on formulas. i always sturggled back then, cuz i needed to hear the physics of it first, to understand it, and they always glossed over that stuff.
Thanks a lot it's a very helpful and useful video thanks for your priceless effort wish to see more videos
This is a very nice video, that was how I saw capacitors working until another video confused me up with electrons with AC and DC
+mathtutordvd you have a super teaching ability.. love you and respect . i was wondering since couple of days actually that how current is flowing despite having gap between the plates,it should have worked like a disconnected wire and what is happening actually...
I am clear view now.so thank you
Sanchari Das
Thank you very much. It is very beneficial.
this is a great presentation, please keep them coming.
big help! thank you!
Yup...This works for me! Thank you so much. Aside from all the initial blurb the crux of it starts at 12:54.
Cheers and more
Yeah .. 👍
THIS IS SO HELPFUL THANKYOU
daaaam i 101% Understand what capacitors Do.:D You explained it.really great 👍
very understandable
I have struggled understanding how current “flows” through a capacitor, and how it charges. Thank you for the clear explanation. I can also see how formulas governing capacitors and their size come into play regarding electric field, surface area, dielectric value etc... It helps me visualize the whole thing. Thank you for the details.
Magnetism
thanks a lot!!! very clear explanation sir!!
very helpful and you explained it nicely
Great video. Keep posting some, you are a great teacher!
Thank you very much
I was missing this information. thank you.
Man you are a First Class teacher....these concepts are not easy to understand but you make them so easy to understand, God Bless You
Great video! Thanks!
I have learned much here. Thanks for tutorial. I just subscribed.
you are so so so so so so amazing
best teacher
god bless you for ever to teach my sons in the future
Great video. Learned a lot
Thanks ..ur explaination is really helpful😊😊😊😊😊😊☺☺☺👍👍👍👍
Amazing! Your videos are saving my gpa!
that was really good stuff, thank you
This guy is my hero! ❤❤❤❤❤❤❤
Very good explanation!
thank you very much you helped me so much.
You are a very good teacher. Holy shit.
You should release your circuits, math and physics lessons on CZcams so poor people like me can keep learning. XD
$35 for an entire lesson is pretty cheap. FYI: I'm poor
indeed you are a good teacher!! TY!!!!!!!
Awesome video thnx very much but can you explain how do the capacitor deals with AC and DC ???
Excellent tutor!
So if I'm connecting a cap to a transistor base the cap should be positive for audio input and negative would connect to the base of that transistor for audio output source correct? Or I could say it like this the audio signal goes into the plus side of the cap and drains out of the negative side of the cap into the transistor base. Basically I want the signal to be continuously going forward and never coming back into the incoming signal. This is what I want to accomplish. Will you be willing to answer this question thank you. 🤗💖
thx for your efforts
This was very useful, even if only like a minute of the video was necessary for me. I'm very much the kind of learner that gets stuck if I feel like I don't know what's going on. Most descriptions I've found of capacitors don't really clarify what's going on, so it just becomes meaningless numbers and magic to me.
Great video thank you
Great work nice lesson
thanks it helped me and from recent discovery electrons can pass through fields right ? can it
+Anirudh Bharadhwaj : Its too early to confirm that electrons can pass through fields however i believe research is ON and we may get to the conclusion in the near future. As of now, Electrons cannot pass through fields.
Are the +ve charges on the right plate repelled by the electric field or by the +ve charges on the left plate???
Very nice tutorial video for even me, a high school student.
changed capacitors on my TV because 3 capacitors were blown up. Never understood what capacitors were good for untill now. Thank you for a good lesson!
You send the current up to plate. but it's not a complete circuit yet so how does the current move? is it because the other side of the capacitor has had electrons removed by the other terminal and is now positive? or are electrons so easy to move with a single terminal charge that the plate can be effected filled? Is there a point when it's filled with negative charges and it actually pushes back or equalises and no more electrons can be gathered?
So freakin cool. Damn I wish I had learned this when I was younger. Trying to catch up is harder.
+mathtutordvd if i had two capacitors that were 2200 volts and 1.0 uf what would the output in volts and the output in joules and coulombs be? I really need to know plz respond asap!!!!!!!!!
Good teacher thank you
Good lecture.
I do have a problem with positive electrons piling up on the plus side of the capacitor though.
I was taught that negative electrons pile up on the negative side and repel the negative electrons away from the positive side making the plus side more positive.
It works both ways
this tutorial indeed explained the working of capacitors...
Is it possible to have a capacitor to supply 60 amps for 2seconds at 14-15v? Where can i buy and how much would it weigh?
good points
I LOVE U THANK U
anahitsimonyan2000 You are welcome!
+mathtutordvd you saved my grade, thank you.
حتى مدرسيهم يفتحون النفس
Thank you.
very informative :)
I just need a replacement capacitor for that SMD '47uF 4A' , what does it mean? I really wanna get my 80' Sony WM DD1 walkman repaired.
great finally i got some logic, thanks
Thanks !
Thank you👍
Also with this field of electricity that's being given off of the charge is know as flux...? right?
Great teacher, subbed :)
Great presentation.!!!
Really appreciate it!
I like it when he's happy with my questions.
Thank you
positive flow? I thought there was only negative flow. you learn something new everyday☺
Khai Veal Positive flow is not physical. It's just the direction opposite to the flow if electrons.
that's really good...
Wow excellent video and explanation
I have a small doubt...The formula for capacitance is C= (area)*(epsilon)/(distance between the plates). Now, by this definition as we go on reducing the distance we ought to get a higher value of capacitance so if the distance is to be made 0 the capacitance should approach infinity. How do you suggest that doesn't happen?
amazing
In simple terms a capacitor is an electrical component that stores un used power, given from the sours. when the sours is taken off the capacitor is the secondary sours that will power up whatever its used for and will be de-charging, either instantly to blast out a charge of power or set for a length of time?
if i had a 12v battery and on a circuit bored i just had a resister and 1 LED in series it obviously would power up, but once i took the battery off it goes out. but if i hooked up 1 (3 microfarad) in parallel to the sours of the circuit and powered it up then took the battery off the capacitor would take the battery's place and continue powering the LED for a short period of time, correct?
Do you mean source?
you might add some corrective text about super and ultra capacitors which definitely are rated in whole Farad's, are common and indispensable now and in the future with electric cars and many physics applications such as pulsed, high power lasers and fusion.
If you have a cap that is made of actual aluminium plates (disks) are the only physical connection on the top and bottom plate? or is every other plate PHYSICALLY connected to each positive and negative?
Thank you Gu Ru