Learn Electronics For Beginners #7 Introduction To Capacitors

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  • เผยแพร่เมื่อ 24 ธ.ค. 2024

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  • @HanVZulu
    @HanVZulu 9 หลายเดือนก่อน +1

    This is why I love this channel. You actually burn things to show what happens when things go wrong. Usually you only learn the right way, but never get to see the wrong way. Awesome video.

  • @elitesoccerblogs4947
    @elitesoccerblogs4947 6 วันที่ผ่านมา

    Thank you for how detailed you are with your videos and how you simplify the concepts I’m learning so much from you !

  • @nigelfewster
    @nigelfewster 11 หลายเดือนก่อน +6

    Entertaining, informative and fun. Look forward to the next one.

  • @Mrsteve4761
    @Mrsteve4761 11 หลายเดือนก่อน +3

    Wonderful explanations in this capacitors series. Looking forward to its continuation.

  • @d614gakadoug9
    @d614gakadoug9 11 หลายเดือนก่อน +2

    The cap at the end of the video behaved exactly as it was intended to. The pressure in the cap caused splitting of the top of the can along the indents there specifically for that reason. However, even with those indents or in big cans that have a pressure relief safety plug, explosions do happen. They can be very dangerous and cause severe injury. You can wind up with the can where your eyeball used to be or being sprayed with boiling electrolyte.

  • @denisvianaaraujo
    @denisvianaaraujo 7 หลายเดือนก่อน

    Thanks. Is very good see your class!

  • @DogsLife12
    @DogsLife12 11 หลายเดือนก่อน

    You do a great job of explaining the basic concepts of all these components. Thank you very much for your content.

  • @sivoltage
    @sivoltage 2 หลายเดือนก่อน

    Love it. Great video

  • @castlecodersltd
    @castlecodersltd 11 หลายเดือนก่อน

    I did not know about Bounce Back. Clearly I need to pay more attention. Thanks for this video 😀

  • @darrenbird2526
    @darrenbird2526 11 หลายเดือนก่อน

    Another great and informative video. Thanks for putting in the time. Cheers

  • @HanVZulu
    @HanVZulu 9 หลายเดือนก่อน

    I actually have a anecdotal story about capacitors. When I took physics class in college many years ago, we had some section about electronics and capacitors was one of the chapters, and a guy I knew back then had found a 1 farad--yes, a whole farad--capacitor. It came from some old IBM mainframe powersupply. This brilliant guy shorted this gigantic capacitor using a regular nail and the spark burnt of a chunk of metal from the ports. Crazy guy. He liked explosives as well. Don't know what happened to him though.

  • @JW-ce4lx
    @JW-ce4lx 11 หลายเดือนก่อน

    Hello Richard, you always have en enlightening video. Your quizzes are always fun. The one thing I would like to mention is that the
    capacitor discharged through the resistor and the internal resistance of the LED, which is about 20 ohms. Keep up the great videos!!

  • @anatema89
    @anatema89 11 หลายเดือนก่อน

    great job, from Italy!

  • @NeilsNonsense
    @NeilsNonsense 11 หลายเดือนก่อน

    Thanks for another great video Richard. I've been reading/watching a lot about capacitors recently to try and understand an astable multivibrator circuit utilizing 2xNPN BJTs. As I understand it, the property of 'displacement current' of a capacitor in crucial to this circuit's operation. What I don't fully understand is under exactly what conditions does displacement current occur? Obviously a 'rapid change' in potential on one plate, but just how rapid? It would be great if you could cover this property of capacitors in one of your future videos as I understand many circuits make use of this property and I'm sure that would be useful for many of us to understand. Thanks again for your great content!

  • @mrkrsl_
    @mrkrsl_ 11 หลายเดือนก่อน

    Really good, well presented stuff. It would be nice to get an idea at the beginning not only how the basic components work, but also what typical uses they're put to. e.g. for capacitors, smoothing, noise filtering, etc. Even if the details will come in a later video it would be great to know why they're found in almost every circuit.

  • @retrocomputinggrotto
    @retrocomputinggrotto 10 หลายเดือนก่อน

    Love the magic smoke!

  • @Dutch_off_grid_homesteading
    @Dutch_off_grid_homesteading 10 หลายเดือนก่อน

    Heya, very nice video and so easy to untherstand with the explanations and practical demostation and for me yes I would like to see the formule with some calculations because at school I didn't got that to learn

  • @mikepanchaud1
    @mikepanchaud1 11 หลายเดือนก่อน +1

    Great. It would be nice to see the voltage charge and discharge curve on a scope or even the graphing multimeter you had on the last live stream.

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +3

      Oh there is another part coming, showing a few other properties on a scope

  • @tomsty7337
    @tomsty7337 7 หลายเดือนก่อน

    Thanks

  • @Mereda777
    @Mereda777 11 หลายเดือนก่อน

    you're the best

  • @tomaskorenek1259
    @tomaskorenek1259 11 หลายเดือนก่อน

    excellent thank you

  • @g4z-kb7ct
    @g4z-kb7ct 11 หลายเดือนก่อน

    A couple of things you missed.... bi-polar electrolytic capacitors (commonly used in audio circuits) and putting a polarized electrolytic capacitor in backwards. The latter will of course cause the cap to instantly explode. Same for tantalum caps too. Maybe you can do that as a grand finale in the next part hehe!

  • @nabman_
    @nabman_ 11 หลายเดือนก่อน +2

    I avoid using Swiss Rolls or Christmas Logs in power supply sections; they tend to leak at higher temperatures making the boards tacky and inviting ants.

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +2

      True. I think Christmas Logs also have the higher capacitance per layer, mostly due to the high chocolate content 😜Well
      it works for me anyway, if i can beat the ants to it

    • @nabman_
      @nabman_ 11 หลายเดือนก่อน

      @@LearnElectronicsRepair loool

  • @BaronVonSTFU
    @BaronVonSTFU 11 หลายเดือนก่อน

    I always wondered why capacitors on circuit boards were unipolar and now I know!

  • @jonathanrose456
    @jonathanrose456 11 หลายเดือนก่อน +1

    “I’m not sure how conductive cake is!”… that’ll have to go down on the notes sheet 😂

  • @tenlittleindians
    @tenlittleindians 11 หลายเดือนก่อน

    Since non polarized capacitors work in both directions do you get the same results with the resistor in series with a capacitor when ac voltage is applied?
    What about ac voltage across a capacitor and led in series? Since the led only works in one direction does it still light but at a 50% duty cycle because of the ac only being in the right direction 1/2 of the time?
    Do these resistor capacitor circuits start developing tank circuit properties when using ac across them?
    What about with the capacitor and led circuit with ac; does this start to function as a basic crystal radio with a diode?

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +2

      Hmm lets try this....

    • @d614gakadoug9
      @d614gakadoug9 11 หลายเดือนก่อน

      A resistor in series with a capacitor (resistor between input and cap; output across the capacitor) forms a "low pass filter." It takes quite a lot to explain how they work, so I suggest you look around the web. I had a quick look and found some articles that aren't too heavily into the math.
      An LED will behave as a rectifier, so if you put one in series with a capacitor and apply AC the LED will light briefly until the capacitor is charged to the peak voltage of the applied AC minus the forward voltage of the LED. There is no mechanism to discharge the cap, so this is a "one time" event. The reverse breakdown voltage of LEDs is quite low, so this only works for low magnitude AC input. Without a resistor in the circuit the initial charge current could be high enough to destroy the LED. If the RC time constant were very long with respect to the period of the applied AC it could take many cycles to charge the cap.
      You need two reactive components, normally a capacitor and an inductor, to form a resonant circuit ("tank"). Energy is transferred back and forth between the two reactive components. A simple RC circuit does not resonate.
      The forward voltage of an LED is high enough that it isn't a good detector for a crystal radio. You would need a very large signal from the antenna and resonant circuit to get enough voltage for it to work well. A germanium diode is usually what is used in a crystal radio.

  • @alanrichardson1672
    @alanrichardson1672 11 หลายเดือนก่อน

    I think most would prefer to use Scientific notation would help explain ratings better when using lots of zeros.

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +3

      I think a lot of people don't understand scientific notation so it's swings and roundabouts

  • @pfg_pedals
    @pfg_pedals 11 หลายเดือนก่อน +3

    A capacitor is a lot like a cannoli, except instead of ricotta it’s filled with sweet, sweet dielectric 😋

    • @oldskoolordie
      @oldskoolordie 11 หลายเดือนก่อน +4

      Mmmmm dielectric 🤤

  • @pault6533
    @pault6533 11 หลายเดือนก่อน

    @9:40 which stream was the hole burnt? I subscribed BTW. 😊

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +1

      Oh it was the one where we were finding out how long a capacitor would survive, when connected to a high voltage supply via a mosfet with a floating gate.... kinda like you do LOL 😂
      th-cam.com/video/cpFRp9C10ww/w-d-xo.html

  • @joec8079
    @joec8079 11 หลายเดือนก่อน

    Absolutely thought “hmmmm I wonder how conductive a Swiss roll is” hahaha

  • @GiC7
    @GiC7 11 หลายเดือนก่อน

    Question, why do you make the circuit parallel? I see this a lot and can't understand that. Thanks in advance. Be blessed in Jesus Christ name amen. Great lesson

  • @bulwinkle
    @bulwinkle 10 หลายเดือนก่อน

    I did a a Google search for the conductivity of raspberry jam and got no relevant results, except for a number of recipies for making it.

  • @shagreobe
    @shagreobe 11 หลายเดือนก่อน

    I was waiting for it to go pop and see the Mrs jump

  • @RectifiedMetals
    @RectifiedMetals 11 หลายเดือนก่อน

    Another snack for thought, capacitors will not measure complete discharge as your meter will charge it a bit.

  • @pmcrisp
    @pmcrisp 11 หลายเดือนก่อน

    fab

  • @theshemullet
    @theshemullet 11 หลายเดือนก่อน

    I really think it would be worth your while to setup a Udemy course. Start with basics, then move into more and more troubleshooting etc. You already have most of the videos you'd need and you can always choose to keep updating the course

    • @g4z-kb7ct
      @g4z-kb7ct 11 หลายเดือนก่อน

      not really. you've forgotten he's running a business repairing stuff. sure he has a bit of free time but his business and making money to pay bills and buy food is priority. just watch the vids and be happy.

    • @theshemullet
      @theshemullet 11 หลายเดือนก่อน

      @@g4z-kb7ct I'm saying to use the vids he has already, not make fresh and I'm very happy

  • @oldskoolordie
    @oldskoolordie 11 หลายเดือนก่อน +1

    Some idiot i worked with would charge capacitors then put them into drinks cans in the canteen. Dont do this.

  • @Dutch-linux
    @Dutch-linux 11 หลายเดือนก่อน

    WOW when you turn the pwer off the LED goes out 😂😂😂 there be something really wrong if it stayed on!!🤣🤣

  • @Lightrunner.
    @Lightrunner. 11 หลายเดือนก่อน

    37:50 It didn't explode😱😱😭😭🤣🤣🤣

    • @LearnElectronicsRepair
      @LearnElectronicsRepair  11 หลายเดือนก่อน +1

      This is live video recording... expect the unexpected