Electronics 101: Capacitors
Vložit
- čas přidán 19. 07. 2024
- In today's lecture, we go over what capacitors are and their basic uses.
Remember that I'm looking for topics for future videos so please leave your suggestions in the comments.
The circuit simulator I used can be found at
falstad.com/circuit/
And check out my blog at
8bitprojects.blogspot.com/ - Věda a technologie
FINALLY an electronics tutorial that also has the next step after the basics!!!
I really liked this video. Its the first one that actually shows a practical use for an electronic component. Ive been dabbling in electronics for years and ive read several books in it. The trouble i have is everything explain things like this: here is a capacitor, it stores electricity, here's a circuit that uses a capacitor, next topic. That doesn't really help me to understand what its purpose is and what its doing in that circuit or how its value was decided. Im looking for a way to learn electronics in a way that i can look at a circuit and see why ever component is there and what its doing in the circuit. Can you suggest some kind of linear path to take to start learning electronics more in depth?
I have a more logically laid out Electronics lecture series that works through all of the math that explains the behavior of these components.
interesting points ,if anyone else trying to find out introduction to electronics course try Sovallo Circuits Expert Fixer (Have a quick look on google cant remember the place now ) ? Ive heard some incredible things about it and my neighbor got great results with it.
5:00 - Only in a video about electricity will I believe the sentence "Our eyes go away and we see..." :D
Thanks for the videos. I'm very much interested in circuitry, and theory behind it.
Cheers!
A simple explanation says it all,appreciate your work,i have watched whole bunch of capacitor explanation videos but didn’t help,you do.thanks
Thank you so much, this series is tons better than the high school electronics course I took.
This is awesome!
Please consider some update videos on Elec 101.
I'm really excited to watch the rest of your videos and learn more about electronics.
Cheers
HumanHardDrive thank you so much for this video series. I've been struggling to find this information for a while before I found this. So much learning right now.
For the first time in my life, I understood when and how they are used. Thank you :)
Man, this is such a practical video. Thank you, sir.
Congratulations for the quality of your videos.
I got a few questions for you... On the differences between electrolytic and ceramic capacitors. I know one is polarized while the other is not. What makes an electrolytic capacitor polarized? Nothing in the capacitor theory would point to this...Would using an electrolytic capacitor equal to using a ceramic capacitor plus a diode? How come when larger capacitors are needed almost always electrolytic capacitors are used?
I like the way you explain things! Great video! What simulating program do you actually use?
Great job on these videos... I have a ba in electronics and it is such a vast field... I like tonusebur videos as a fresher... to get straight to the point of the usage of the components. ..I no how to calculate everything. .. but what isnt really taught in books are the utilities of the components. .. like de coupling... I didnt really understand it and now i do.. thanks a lot now go over inductors... its good thatbu don't go to far into deriving the equations because it just takes to long.
I appreciate your time on making this video it was very helpful. Thanks
Very informative & simple to follow.
You explain things so well !!
Great vid thanks. A cool suggestion for a topic would be solar power point tracking and low power current sensing with uC like 328p. Also I wonder if maybe the uC could be used as an ideal diode controller with two p mosfets with gates tied. If so that would be great. I love making the most of power and building circuits carefully to be lean.
Great Vid Man! Really explained things well!
Thanks so much!
Very useful to rembember bases for my electrical engineering courses
I appreciate you doing this. Like a lot. Thank you for taking the time to make these videos :).
@humanharddrive
Thanks for the link to the circuit builder
I want to talk to you about a couple things. 1st, thanks for taking the time to go over basics. I started doing some pretty intense "DIY" pro audio work i.e. building mics, preamps, analogue gear, etc. and I honestly don't understand why it works & how I could modify gear I already have. I too am working on a video log and blog that will help others learn about DIY audio and recording. i was wondering if you could go over Schoep's Circuit? I'd like to have you on the blog to answer Q's? Cool?
Good videos. I need to learn the simulator.
Amazing video!!!
Very clear explanation!
This is really good!! Thank you!!
Hey, HD, in the part of the high pass filter you have a resistor grounded at both ends? how does that work?. I would like to compliment you on your electronic 101 tutorials, very good and thorough! the explanation of the high and low pass filters with the circuit simulator was excellent, Afrotechmods would've been proud of you.
If you've seen all the Electronics 101 lessons up to this point you should be fine. I really don't go into too much circuitry with the Arduino. At least, not yet.
I understand one formula for capacitors, which make a lot of intuitive sense, and seems deceptively simple: that the derivative (how fast it is changing) of the voltage across a capacitor is proportional to the current, for a given capacitance.
HOWEVER, what I do not understand is how to convert this relationship, substitute ohms law into it, and solve it. Currently, after some algebra, I was able to figure this relationship out:
C*dV(1)/dT = (V(2) - V(1) ) / R.
I got that from realizing that V=IR, and that dV/dT*C = I. Just substituted the 2 together. I do not know how to simplify that further though, to end up with that weird inverse exponential curve that is the charging curve.
You use the term SIGNAL, but you do not clarify what that is - Voltage / Amperage / Resistance / watts ?? Please clarify what that mythical signal is exactly?
Many thanks for a great video series, I am 72 years old, but have always wanted to understand electronics to a decent level, and you are certainly helping me to get toward that goal.
Ian Turner usually "signals" are read as voltages. For example, some circuits might interpret anything above 5V to be a "1" while less than 5V is a "0". Thus, you can do logic operations in binary :)
I am in the infancy stage of Electronics 101. To this point, I need a major clarification on battery voltage. You see many of these tiny, rectangular, 9V batteries being used on breadboards. A riding lawn mower typically has a 12V battery which is considerably larger than the tiny, rectangular 9V battery, yet the voltage comparison is 9V to 12V. Adding to my confusion is a 12V car battery which has the same 12V rating as the riding lawn mower battery, yet the car battery is quite a bit larger and heavier. What am I missing that differentiates between these voltage readings: 9V rectangular battery versus 12V mower battery versus 12V car battery. Thanks!!!
It's in the description of the video.
You're great Man!
thank you very much.
Is the time factor the time it takes to charge or discharge, or both?
Great Video thanks. How about some tutorials on Tubes and tube circuitry?
Hello,
I thought you did a "great" job on this presentation/tutorial.
I'd like to see more on the following; diodes, ICs, resistors, switches, and transistors.
How can I get a copy of the simulator you used?
Let me know.
Hi, Let me know if I have this straight: Capacitors help keep the voltage/current stable and also gives the initial surge of electricity to start a motor.
When I say cross, I mean that the electrons having been built up on one plate, won't let anymore onto the same plate. Sorry, for the confusion.
sorry, I didn't quite get how resistor + capacitor may block high frequence signal? and capacitor + resistor blocks low frequency signal?
really nice series of lectures btw :) congrats
Hi.. Hoping you can point me in the correct direcrion. I am trying to sup up a sander with a washing machine motor. I was told i need a start cap or (according to my research a run cap) i think i would perfer a run cap to help with performance. I already have the, "i think single stage motor" jerry rigged to the sander. When i switch it on it hums until i physically assist it. Was wondering if you inform me on what run cap i could purchase for a 5 amp 115v ge washing machine motor.... Thanks
Would love to see trouble shooting old tube radios, preamp, tuners, receiver video! From powering up by variac to trouble shooting circuits. Thx!
how about pinball machines. tons of solid state circuits there. that is one of the reasons why i am here. to refresh my knowledge so i can learn how to fix these things
andrew donohue
That's an interesting hobby Andrew, very cool! Not enough tubes in a pinball machine for me though!
there is a bunch of guys out there who make videos showing how to make these cool little fm transmitters that run off of a 9 volt but the just sjow you how its put togather without explaining what each part does.. which is just stupid click bait.. can you do a in depth video on how it all work togather? cheers..
Thank you, thank you! You've answered many questions in this one video. You mentioned posting the name of the simulator used?
+Ronette Fourie like he said check description =)
How about a video about solid state diagnostics?
Like say, how to find and fix the problem on say a guitar amp that had the speaker wires short by accident, and now has no sound coming out, and do it using just a multimeter and some alligator clip wires, since most of us don't have access to an oscilloscope & all the other fancy & expensive gadgets the pro's usually have....
my shallow well pump will not start , I swapped the capacitor with a different pump and it works , the old capacity off the pump was 124 - 148 UF , watching videos on CZcams I came to the understanding that I could install something which is 5% less or 10% more from the original ,
the question is?
if I install a larger capacity will that extend the it's life expectancy ?
Old capacitive part number
61B1D 120124NNAO ,
680171-001 ,
it has the manufacturing date of 16/07/2010 ,
My swimming pool pump had the same capacity for over 15 years no problems , I guess they don't make them like they used to.
your input is appreciated thank you have a nice day .
wow man tnx for sharing your knollag brother much apriciated.
Awesome videos. Thanks!
I just can'r wrap my brain around this capacitor shit. REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
ok wait nevermind. I think I understand it a little bit. I have been playing around with that circuit applet. things pretty neato
Hello human hard drive. I'm looking at using a 1000uf capacitor in a circuit to eliminate noise in the video. ( 12v dv power supply). what is the resistance needed?
hey I have a bunch oif 3 wire 20+ farads up to 80, what are these used for and what can I do with them.????
does ANYone know what I can use these for?
Note: I have no idea what I'm talking about, but trying to understand this. When you first state that there is a buildup of electrons on one plate, and they want to get to the other plate with no electrons because "They don't like each other"- are you referring to the entropy, and the thermodynamic equilibrium? That's kind of how I understand it, but let me know if I'm wrong.
GoFuckYourselfCZcams no, he's just referring to the "same polarities repel" rule. Electrons have negative charge so they want to "escape" from the other electrons & move to the less negative (or more positive, relatively) plate. The dielectric material between the plates (& the gap) prevents that from happening under ideal conditions.
so if a resistors decreses the energy and capasitors stabels it back to normal, how do you get your effect from the resistor on the out put?
I am new to this, but laugh if you may, at my question, as long as it makes u happy and as long as u answer lol :P
i want to build a electric drag car im thinking capacitors are going to play a major roll since they can discharge all energy in a pulse ? hopefully work for ford electric division down the road #fingersCrossed
I'm not positive so dont quote me, but i don't think this discharge will do anything for you as far as the 'explosion' of torque and force that you want out of your motors. I pretty sure though that it will help it get to and maintain top speed once it is off without any jumps in power running through the motors or motor and in turn increasing the life and efficiency of the motors. Please reply if you learn or have learned otherwise, saying as i am a few months behind your post.
where does the low pass filter cutoff frequency comes from?
i really like your videos but sometime you give frormullas without telling where they are coming from or how you can get to them...
i would assume the frequency is related to t=RC time which you did explain.
is it possible to modify a power inverter from 12 volts to power an electric motor of 75 volts and 500 amps???? if possible how?? can you have a demo or lecture for it???
If you have any questions, let me know.
I can't find your discussion on inductors? How can I find it?
I like the lectures but why not talk only about capacitors like different types and so and do a separate lecture about filters. Don't mix it please. :)
How much do i need to know before moving on to Arduino and that sort of thing?
Humanharddrive are you still accepting ideas on topics? or have you ended the series?
Can you explain Radio control circuit and it's requirements please.
Yes, I would also would like to learn about radio control and how to put it to work in my circuits.
Of course. I'm just on a little hiatus while I get back to school.
Can you make a video on why a dc motor would use a crystal
How about where to salvage NE 555 timers
If a capacitor has a rating of 10,000 mfd and a voltage rating of 60volts I know it's maximum operating voltage is 60 volts, but what I want to know is, if the circuit only applies 30 volts to the capacitor does it only charge to 5,000mfd?
No. The voltage has to do with when the dielectric of the capacitor will fail. It's still a 5,000 mfd capacitor even if you only partially charge it.
The last seven words in your reply answer my question. If the voltage isn't high enough, the cap will only partially charge.
What is the name of the simulator you are using??
I'm doing a new one. I felt as though my previous attempt left much to be desired.
can u add pics when u speak on specific part etc. otherwise gud job
i still dont understand i watched lots of videos about capacitor but i still dont understand when to use a capacitor in a circuit
i mean is, its a 12 volts battery
no current canna cross it
Circuits
electrons can't jump it's because of potential difference
I'm new
Hi I know you can help me , I am working with 12V this is what I want to do extend time on my door bell . If you push button fast and let it go the bell time is short , what I want is for bell to work a little longer after you let button go . What capacitor to use and how to hook up . Please get back thanks my channel is m42665
Use the Time constant formulas for charging/discharging of a capacitor and solve for C or C=q/V
+Bodhi Root Thank you for your help ! But I going with the 555 chip timer that I can change at will with out adding or put any parts . You would think the one who made the video would be the one to help out the people but not the case .
I really liked this video. Its the first one that actually shows a practical use for an electronic component. Ive been dabbling in electronics for years and ive read several books in it. The trouble i have is everything explain things like this: here is a capacitor, it stores electricity, here's a circuit that uses a capacitor, next topic. That doesn't really help me to understand what its purpose is and what its doing in that circuit or how its value was decided. Im looking for a way to learn electronics in a way that i can look at a circuit and see why ever component is there and what its doing in the circuit. Can you suggest some kind of linear path to take to start learning electronics more in depth?