Capacitors Explained - The basics how capacitors work working principle
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Date: 2023-11-17
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Comments and reviews: 30
Ken
1. A capacitor is simply two conductors separated by an insulator (dielectric)
2. Capacitance is that property of an electric that tends to oppose a change in the voltage
3. The charge is not stored on one plate or the other; the charge is stored in the dielectric
- these are simple but accurate descriptions
Your water tank analogy is more applicable to an inductor or inductance. If you want to use a water analogy for a capacitor I would suggest using a hose, where once you shut the nozzle off, the hose expands to a point depending upon the water pressure applied (analogous to voltage. When you open the nozzle again you get a blast of water until the hose regains its original size. The elasticity of the hoses is analogous to the dielectric in the capacitor.
A capacitor is simply a device that concentrates the juxtaposition of the two conductors and the dielectric so you get a large r capacitance than you would with just two (insulated) wires running side-by-side
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1. A capacitor is simply two conductors separated by an insulator (dielectric)
2. Capacitance is that property of an electric that tends to oppose a change in the voltage
3. The charge is not stored on one plate or the other; the charge is stored in the dielectric
- these are simple but accurate descriptions
Your water tank analogy is more applicable to an inductor or inductance. If you want to use a water analogy for a capacitor I would suggest using a hose, where once you shut the nozzle off, the hose expands to a point depending upon the water pressure applied (analogous to voltage. When you open the nozzle again you get a blast of water until the hose regains its original size. The elasticity of the hoses is analogous to the dielectric in the capacitor.
A capacitor is simply a device that concentrates the juxtaposition of the two conductors and the dielectric so you get a large r capacitance than you would with just two (insulated) wires running side-by-side
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Glyxis
How long capacitors can actually store the energy? I've been disassembling some electronics/motherboards and stuff in recycling center and one thing we did there was that we cleaned circuit boards as much as we could, so we also pulled all capacitators out, usually just with pliers or side cutters. Does this mean we have always been in a danger of a shock? Wow, didn't even know that, I've probably yanked hundreds of them out, lol.
Well, most electronics there was probably been years out of use, so capacitators probably were out of charge, but there was also pretty new stuff time to time. Also, there was pretty large capacitators like microwaves and radios have, those were such chunky boys!
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How long capacitors can actually store the energy? I've been disassembling some electronics/motherboards and stuff in recycling center and one thing we did there was that we cleaned circuit boards as much as we could, so we also pulled all capacitators out, usually just with pliers or side cutters. Does this mean we have always been in a danger of a shock? Wow, didn't even know that, I've probably yanked hundreds of them out, lol.
Well, most electronics there was probably been years out of use, so capacitators probably were out of charge, but there was also pretty new stuff time to time. Also, there was pretty large capacitators like microwaves and radios have, those were such chunky boys!
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Himalaya
I use to be afraid of these because I never really understood the mechanism and principles behind these things (capacitors, resistors, diodes, transmitters etc. These things were included in our physics syllabus. Everything I studied just went above my head. All the teachers were just very bad at teaching topics like these. Now looking back in the time, I wish those teachers would've taught these concepts like you did. Now I am not afraid of those concepts and it's all because of you. Thank you so much for clearing my mind on these concepts. You are a true sensai.
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I use to be afraid of these because I never really understood the mechanism and principles behind these things (capacitors, resistors, diodes, transmitters etc. These things were included in our physics syllabus. Everything I studied just went above my head. All the teachers were just very bad at teaching topics like these. Now looking back in the time, I wish those teachers would've taught these concepts like you did. Now I am not afraid of those concepts and it's all because of you. Thank you so much for clearing my mind on these concepts. You are a true sensai.
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ChadAF
I went to college for Chem e, and I am extremely concerned at 35 years old I went into the wrong field. I just started electronics as a hobby, and after finding your videos I believe I missed my calling. Im currently building a handheld tool that can detect water behind polyurethane, as I built my Tesla coil and am happy with it now! Please keep up the videos!
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I went to college for Chem e, and I am extremely concerned at 35 years old I went into the wrong field. I just started electronics as a hobby, and after finding your videos I believe I missed my calling. Im currently building a handheld tool that can detect water behind polyurethane, as I built my Tesla coil and am happy with it now! Please keep up the videos!
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Wayne
In my high school auto-shop class, one quickly learned that, even if it's sitting harmlessly on a workbench, never pick up a condenser (an old name for a capacitor. It's a 2 long metal can with a wire attached. It will hold a 12V charge until it's picked up, completing the circuit between the wire and can.
It's a s\hocking experience.
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In my high school auto-shop class, one quickly learned that, even if it's sitting harmlessly on a workbench, never pick up a condenser (an old name for a capacitor. It's a 2 long metal can with a wire attached. It will hold a 12V charge until it's picked up, completing the circuit between the wire and can.
It's a s\hocking experience.
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Neil
Hi, could you please explain something thats confusing me right now? In this video the electrons are flowing from the negative to the positive of the battery but in the transistor video the electrons are flowing from the positive to the negative. Which is correct or are they both correct and it depends on the type of circuit?
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Hi, could you please explain something thats confusing me right now? In this video the electrons are flowing from the negative to the positive of the battery but in the transistor video the electrons are flowing from the positive to the negative. Which is correct or are they both correct and it depends on the type of circuit?
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Manuel
Sir it is a very helpfull information that inspire me to love my work as a RADIO/TELEVISION SERVICE MAN TECHNICIAN
EVEN IN ELECTRICITY AS I AM AN ELECTRICIAN AS WELL
Your explanation is well understood you are more than a professor in a prestigious School YOU HAVE JUST COMLETED MY TECHNICAL KNOW HOW thanks Sir.
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Sir it is a very helpfull information that inspire me to love my work as a RADIO/TELEVISION SERVICE MAN TECHNICIAN
EVEN IN ELECTRICITY AS I AM AN ELECTRICIAN AS WELL
Your explanation is well understood you are more than a professor in a prestigious School YOU HAVE JUST COMLETED MY TECHNICAL KNOW HOW thanks Sir.
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Ben
Hi Sir, I have a question. For touch screen switch and some smart light bulb, when you turn off the switch, the light bulb only dim and not completely turn off. but when a capacitor is added between the live and neutral cable, the light bulb is completely turn off. Able to illustrate what is the reason behind that?
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Hi Sir, I have a question. For touch screen switch and some smart light bulb, when you turn off the switch, the light bulb only dim and not completely turn off. but when a capacitor is added between the live and neutral cable, the light bulb is completely turn off. Able to illustrate what is the reason behind that?
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Cloud
Fun fact: on a strictly technical level, capacitors do not store charge, they store just the energy - the net sum of charges in a capacitor is zero. It's a fun fact to remember, but for almost all intents and purposes that simplification is understood and only the ummm ackshually people may try to correct you
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Fun fact: on a strictly technical level, capacitors do not store charge, they store just the energy - the net sum of charges in a capacitor is zero. It's a fun fact to remember, but for almost all intents and purposes that simplification is understood and only the ummm ackshually people may try to correct you
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Dave
July 2023 - Thank you for this amazing video. I know it took a lot of work to put together, but you covered everything and left nothing to the imagination. As was said before, you put other instructional videos to shame! Thanks again!
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July 2023 - Thank you for this amazing video. I know it took a lot of work to put together, but you covered everything and left nothing to the imagination. As was said before, you put other instructional videos to shame! Thanks again!
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classic
I have electronic devices from the early 90s in storage, turning them on for 1 hour (60 minutes) Is it good or bad to prevent all electrolytic capacitor failures due to disuse? what interval time tuning on all electronic devices?
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I have electronic devices from the early 90s in storage, turning them on for 1 hour (60 minutes) Is it good or bad to prevent all electrolytic capacitor failures due to disuse? what interval time tuning on all electronic devices?
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Ted
I took a dc circuits course years ago. Plenty of stuff hadn't heard of before in class. There was a guy from our area named An Wang who used capacitors to make the first computer logic circuits to make a 5v 1 bit or a 0v 0 bit
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I took a dc circuits course years ago. Plenty of stuff hadn't heard of before in class. There was a guy from our area named An Wang who used capacitors to make the first computer logic circuits to make a 5v 1 bit or a 0v 0 bit
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TheYTPguy
I just built my first circuit on a breadboard 2 days ago. Even for an absolute beginner, this was so easy to understand! Ive watched other videos but this was by far the best! Keep up the great work!
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I just built my first circuit on a breadboard 2 days ago. Even for an absolute beginner, this was so easy to understand! Ive watched other videos but this was by far the best! Keep up the great work!
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tony
2023 electrical engineering professionals: K this is good subject matter.
1997 Kid with 2500W parallel amps and 2000 Farad caps and twin alternators with 6 marine batteries in the trunk: K Brah.
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2023 electrical engineering professionals: K this is good subject matter.
1997 Kid with 2500W parallel amps and 2000 Farad caps and twin alternators with 6 marine batteries in the trunk: K Brah.
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rama18ification
Its been 20 yrs i have completed my electrical engineering. Now im developing intrest to understand and dig deeper seeing these videos. I never understood all these when in college
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Its been 20 yrs i have completed my electrical engineering. Now im developing intrest to understand and dig deeper seeing these videos. I never understood all these when in college
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BC
WOW! Wish we had this video on the Internet in 1990 when I was getting my BSEE degree. The electronic circuits classes and labs would have been a whole lot easier to understand!
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WOW! Wish we had this video on the Internet in 1990 when I was getting my BSEE degree. The electronic circuits classes and labs would have been a whole lot easier to understand!
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sprigatitooooo
Thank you for the video! my teacher only explained and tested the equations, without the concept of capacitor itself. This immensely helped me, thanks again!
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Thank you for the video! my teacher only explained and tested the equations, without the concept of capacitor itself. This immensely helped me, thanks again!
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Dr.
Beautiful. Loving your videos and your pedagogical approach. You offer plenty of remediation which is great for an older student like me with ADHD. Much appreciated.
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Beautiful. Loving your videos and your pedagogical approach. You offer plenty of remediation which is great for an older student like me with ADHD. Much appreciated.
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Brian
As a previous Electronics Technician, from the Vacuum-Tube era, I appreciate the way you explain with illustrations the concepts of components. Awesome Job! Thanks!
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As a previous Electronics Technician, from the Vacuum-Tube era, I appreciate the way you explain with illustrations the concepts of components. Awesome Job! Thanks!
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Jawsjawsjawsrg
I really wish this kind of stuff existed 15 years ago when I was going to school for electronics. I might have actually completed my degree for it.
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I really wish this kind of stuff existed 15 years ago when I was going to school for electronics. I might have actually completed my degree for it.
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Zebra
If a capacitor stores energy for only 2 seconds, what happens if we used 2 capacitors? Will it become 4 seconds or the voltage/current doubles or other
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If a capacitor stores energy for only 2 seconds, what happens if we used 2 capacitors? Will it become 4 seconds or the voltage/current doubles or other
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Nimajneb
Not sure if this is the proper place to ask this, but How would I discharge a capacitor? I have been just desoldering them hoping they are empty.
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Not sure if this is the proper place to ask this, but How would I discharge a capacitor? I have been just desoldering them hoping they are empty.
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Christopher
At what point does electricity become lethal? Is there a tipping point of volts or amps or something which then makes it a no no touch
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At what point does electricity become lethal? Is there a tipping point of volts or amps or something which then makes it a no no touch
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Justin
Well, this is helpful, I dont think it adequately explains the distinction between a battery and a capacitor. Both are for storing energy.
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Well, this is helpful, I dont think it adequately explains the distinction between a battery and a capacitor. Both are for storing energy.
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Mark
wow your video is amazing I blew my capacitor in my voice modulator it still worked but I couldnt understand why know I do excellent stuff
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wow your video is amazing I blew my capacitor in my voice modulator it still worked but I couldnt understand why know I do excellent stuff
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The
Thanks So Much! The explanation is so good and simple, Everything is easy to understand. You made it easy to understand. Thanks So Much!
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Thanks So Much! The explanation is so good and simple, Everything is easy to understand. You made it easy to understand. Thanks So Much!
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ChadAF
Connecting the negative lead to the longer pin on your capacitor just made me 2nd guess everything I thought I knew about electronics
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Connecting the negative lead to the longer pin on your capacitor just made me 2nd guess everything I thought I knew about electronics
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RJEEY
Im a noobie and I just wanted to ask Why is the resistor after the LED? Shouldn't the voltage be reduced before it reaches the LED?
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Im a noobie and I just wanted to ask Why is the resistor after the LED? Shouldn't the voltage be reduced before it reaches the LED?
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Aero
In a few more minutes you could have discussed the role of the capacitor in a tuned circuit. Wireless is THE thing these days.
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In a few more minutes you could have discussed the role of the capacitor in a tuned circuit. Wireless is THE thing these days.
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mrsanchaz2003
I dont think that the electrons move along the wire as shown. I remember watching another video which explained that
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I dont think that the electrons move along the wire as shown. I remember watching another video which explained that
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