Electronics Tutorial 1 - Ohms Law
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- เผยแพร่เมื่อ 31 ธ.ค. 2014
- Welcome to the first video in the series of electronics tutorials. In this video we will explore ohm's law. Ohms law explains the relationship between voltage, resistance and current. To demonstrate the circuits we will use the software called EveryCircuit. With kind thanks to Igor for permission to use the software in this and future tutorials. EveryCircuit is available at www.everycircuit.com
Best tutorials on earth. And even better that it's Sean Connery teaching
I'm a beginner in electronics, but I've watched and read a number of tutorials on Ohm's Law. I watched this video to learn how to use everycircuit. Not only did your video help with that, but it's one of the easiest to understand videos on Ohm's Law. Thank you.
You are welcome!
Your teaching presentation is top-notch. This is the best presentation that I have seen a very long time. Thank you so much!
Cannot thank you enough for these vids. I have waited years for a prog like this. You have helped me understand it much easier.
Your very welcome. Thanks for watching.
Now THIS is what I was looking for
Hi, Hope you enjoy the series. Thanks for commenting.
Awesome explanation as a newbie I have waded through loads of videos and articles struggling with the algebra you make it very easy to follow so glad I came across your channel
Eureka! I have been searching for ages to find a decent electronics tutorial and have found one at last where the balance of information presented is just right.
Not talking to the audience as though they are kindergarten children nor as though they are nuclear physicist.
Informative, but not insulting nor over the top.
Thanks a bunch 👍
Its always great to hear from someone who has benefitted from these tutorials. I admit i have made mistakes but finding this out is part of the learning process. I hope you enjoy electronics for may years to come.
@@Jenko022
Thanks Jenko.
I only discovered electronics in my later years but hope to get hours of enjoyment from the hobby in my retirement (as long as my eyesight is up to the task).
But, as I stated previously, your clips are going a long way to make it enjoyable as they are easy to understand and follow without being condescending.
PS It was also good to see someone make a presentation without the need to use the 'water flow analogy', which I always find annoying and total waste of time.
Thanks again for taking the time and making the effort to educate us all.
This is a great way to learn electronics. In EveryCircuit, I can watch movement and speed of electrons on paths.
It is an excellent learning tool for electronics.
Jenko022 I am now encouraging my little nephews to play with EveryCircuit on my tablets. I hope to get them interested in electronics as well as in programming, mechanical engineering, science, traditional art, etc.
Thank you very much for the great series. I can't thank you enough. I wish you all the best.
Thx for the video - getting back into electronics and i found this app and your videos so im stoked to learn again
Thanks for these videos! I'm taking an accelerated mechatronics course, and Everycircuit has been helpful to understand electricity quickly.
Hi Carlos , thank you for your comment. I wish you all the best with your course.
Thanks for the series!
your very welcome
Very nice presentation.
Superb. Thank you for this. I am training for a new job and I really need to brush up on my circuit knowledge. I feel confident buying Every Circuit now. I will be following you for more guidance.
Stephanie Davis Thank you for leaving a comment. All the best in the new job. Every Circuit is and excellent tool for learning circuits. Have fun and enjoy. All the best.
Thanks for making these!
Your welcome. Glad you enjoyed the tutorials.
is there a monthly subscription of this app? i cannot find the info on their website regarding my question
hi sir, how should i download this everycircuit software from google and install in my laptop , because i have tried downloandin many times but it didnot work,and webpage of everyciruit is downloaded automatically.....please help me
+Lal Bdr Ghalley Hello Sir, if you are using a laptop then you need to download and install Chrome Browser. Simply open www.google.com in your current browser then search for Chrome Browser Download. Then you need to open Chrome browser and in the address bar type in everycircuit.com/ . From there click the Chrome icon and the top of the page and you will be given a page to register. Once you are registered you can login from your Chrome Browser. If you are using a laptop you do not need to install any software except the Chrome Browser. Hope this helps. If you need any more help please message me.
Hi, just started to learn electronics and using Everycircuit app. I found your videos very helpful, but I'm still struggling understanding the simulator when creating a basic circuit. Could you elaborate a bit on basic AC circuit and their components like volts, frequency, Hz, waveform, etc on the simulator. Cheers!
+Rolando Torrico Hi Rolando, Im glad you are using EC to learn about electronics. In the videos which have ben produced so far, I have tried to cover the basic components. The next set of videos will cover inductors and will explain more on the subjects you want to learn more about. Do you want to know how to measure these value or how they work in the simulator. I would also recommend a book called Electronics for Inventors. It will compliment your studies and provide you with a lot of information on how electronics works. Hope this helps. Please message me if you need more info.
+Jenko022 Thanks for the advice, I look forward to learn more from ur videos.
thank you bro
You're welcome Bro! :)
Hi i ask u question please how many components in this every circuit free trial and legal parched
All the components should be available. Please email info@everycircuit.com for legal requirements
Sir, I wonder if you can comment on a frustrating experience I had exploring Ohm's Law.
I set up a simple breadboard experiment with a 3.3v power source and a selection of resisters (I believe they are quarter -watt carbon resistors - of the size that would come with an Arduino kit). I would select a resister, use Ohm's Law to predict what my current in the circuit should be, set up a model in EveryCircuit to verify my math, I would verify the resistor using the meter, and then I would run the circuit using my Uni-T UT61E with upgraded probes (arguably a decent, reasonably accurate meter) in series as the ammeter.
Using a 47-ohm resister I got only 56mA instead of the predicted 70 mA(!), 37% less than predicted or modeled. Using a 22-ohm resister I got 104mA instead of the predicted 148mA, 29% off. As the resisters I used increased in resistance the predicted vs. actual mA numbers got closer, until at 147-ohm I got 21mA instead of 22.4mA and at 470-ohms I got 6.9mA instead of 7.02mA, both reasonable results.
Can you, or anyone, explain why current at the lower resistances were off so much? It's really perplexing me! Was I pushing 1/4-watt resistors too hard at even the low-voltage of 3.3v?
Hi, Thank you for your comment. what you are experiencing here is a case of simulation vs reality. With electronics there will be environmental issues which affect compenents, Heat, Humidity etc. This will affect performance. Also resistor have a tolerance rating which should be considered when making measurements. The small resistors you have used on the breadboard will have a tolerance rating of around 10%. Which means if you use a 22-ohm resistor you have to allow for 10% above or below that marked value. Also remember that a breadboard will not give a perfect connection. Breadboards are for prototyping, basically the next stage after simulation. Ideally when you have built your prototype you would then create the circuit onto a permenant circuit board and solder the components permenantly in place.
If time allows you, solder the same simple circuit into a strip board and retry your measurements. The voltage you use wont matter as you just adjust your calculation.
One other thing i would mention is when you actually get to a final circuit you can invest in higher quality ceramic resistors which will improve things greatly for you.
The golden rule is, try not to get too frustrated with this. Some of your measurements arent too far off and you have to compensate in other ways for this.
Hope this helps.
@@Jenko022 thank you so much for your prompt response.
I watched your tutorial #9 'Power' after my experiments and realized that, with the tolerances, I may have been pushing the resistors beyond their 1/4-Watt a wee bit, which could have added to the variation.
It's funny, but I guess I have always thought of electronics as such a strictly defined science with very accurate, precise numbers, so it is a little surprising to find that there is a lot of 'art' to the fudging of the numbers & calculations. After building Boeing airliners for 15-years I shouldn't be surprised ;)
Thanks again, I love your channel!
Thank you for providing these videos. I've been trying to prepare for DIY with microcontrollers. Can this tutorial be helpful with it?
Hi, microcontrollers do have a specific pinout so its important to get the required documentation to get the best functionality. Do you know which microcontroller you are going to use? Would recomend esp32 or esp8266
@@Jenko022 Thanks a lot, I am looking forward to learning some Arduino. However, I just don't know how to get started with electronic basics for it.
@@elevenseven5133 There is a lot of tutorials on youtube for Arduino. You connect the Arduino board to a computer then program it through the interface. You can program the pins on the arduino to turn on and off in any sequence so you can make some really cool projects.
@@elevenseven5133 you can use the simulator to create some test circuits and the Arduino can control on and off signals to the circuit.
hello sir nice video but this app may take any charges
Hi . Good explanation. But I'm curious to know why there is 0 volts at the bottom wire leading out from the ground view
+Shaun Somaru Hi Shaun, apologies for the late reply. Are you talking about when the cicuit is connected to ground?
***** .hello sir. Yes when it's connected to ground. There is 0 volts between ground and the power source. There were 9volts when it started flowing from the battery. Where did the voltage disappear to after the resister was added. Thank you for your reply.
+Shaun Somaru From what I understand the zero volts is just a reference to ground. The actual voltage at the groud point will be minus 9 volts. Plus 9 Volts at the positive terminal and Minus 9 Volts at the negative terminal. Im sure this is correct. I will look at this further and confirm for you.
+Shaun Somaru I found this good explanantion at www.instructables.com/answers/whats-the-difference-between-12V-and-GND/
Voltages are always measured and named relative to other voltages. Any one of them can arbitrarily be called 0V. Simple example that may help clarify: Think of two 1.5V batteries in series. If you measure across the two of them, that's a total voltage difference of 3V. If you pull a wire out from the point between them, that's at 1.5V on the same scale. But you can also call that middle wire 0V, in which case one battery is supplying +1.5V and the other is supplying -1.5V. So: you can look at the three voltages you named earlier as either (0, +12V, +24V) or (-12V, 0, +12V), or (-24V, -12V, 0) or even (-19V, -7V, +5V). Which set of labels you choose depends entirely on what makes sense for the circuitry you're connecting them to.
***** .Thank you kindly. This puts everything into perspective. And thank you for taking the time to respond to my queries and also a big thank you for your very informative videos. God bless
sir please make the fly helicopter circuit??
How do we know where should we place the grounding/earthing ?
Hi Nishant, When the power supply is connected to your components which need to be grounded will be connected from the positive terminal to the negative terminal. The negative terminal is ground. Just think of the flow of current always going from the positive to the negative. Hope this helps.
Jenko022 thank you
Hi, you need to download and install the Chrome browser from www.google.com/chrome/browser/desktop/index.html then go to the web address everycircuit.com/ and create an account.
Hi Nishant, You need to install Chrome browser then go to web address www.everycircuit.com there you will be able to sign up.
plz....give me Windows version link
Watch out folks, Trolls on the loose
why didnt they let you just type in the value instead of the dial
+mycollegeshirtI think they use the dial to save screen space. You can mouse click the dial to get near to the required value and there is the +/- buttons to fine tune.
yeah i get that but why not let you click/doublick on the value to alter it, it wouldnt detract from any of the screenspace
+mycollegeshirt I agree. You could request this function by emailing the developers at info@everycircuit.com
cool oiught I'll see if they can
I can only say, that was some kind of NumbNuck limitation.
hello sir nice video but this app may take any charges
There is a subscription fee of $10. There will also be charges if you use the app over 3G on your phone. The app is available for Android and iOS.