The course is all about getting your hands dirty with real world electronic components, understand how each part works through cool experiments, plugging them together to glow LEDs, beep buzzers, control lights and various cool projects and having fun.
This course has been successfully tested on over 3000 Junior and Senior High School Kids as well as Science Educators in India.
At the end, you get into the details of each project- Whats and Whys and Analyse the circuits through Voltages, Currents, Laws that Govern Them and Draw Conclusions.
List of 20+ Experiments in the Course:
How to do the course:
A Great welcome to Electronics with Fun Course! The whole idea is to build things, test the concepts and learn through experimentation and observation. As you progress, your knowledge and skill levels would enhance and you will feel much confident after doing 50% of the course. We have included the section-wise PDFs for your reference. PDFs contain detailed theory, in-depth explanations and amazing facts called DYKs (do-you-knows) to keep you engaged.
What are you waiting for?
Lets get Started!
Lets learn and build Circuits.
Hello! Welcome to the course. You will have awesome fun and learning in doing this course. We will start with some basics. The first fundamental question is 'what is electricity and what are electric charges'. We will demonstrate how friction creates electric charges. Just relax and watch! No need of any notes making. Enjoy the show.
In the last lecture, you learned about the two kinds of charges. Lets learn about the devices in which we can store electrical energy. We often use them in our daily lives, right!, batteries. Lets learn some basics about batteries and how they produce voltage. We often misunderstand the meaning of voltage. This video will explain its true meaning. Again, no need of any notes making! Sit back, relax and enjoy the show.
Here comes the first hands-on activity for you. Take out your multimeter. You are going to measure the voltage of a DC battery. This is the most basic skill you should have if you want to be a great circuit maker. Get, Set and Go!
And if you face any problem in doing it, simple download the attached tutorial 'Measuring battery voltage using a multimeter'. What are you waiting for? Do it Now!
Well, certainly you know much about voltages. You are ready to learn about electric jolts! In our daily lives, we call this current. What is current? What is its direction? How do we define it? Why does it flow? This is the important fundamental you must know. No need of any notes! Sit back, relax and enjoy the show.
Cool! You have learned about voltage and current. Now, let us learn about resistance. This is quite an interesting video. Here you will learn about what are resistors, how do we define them, how do we identify and read them?
Whats more! Get your Multimeter ready to measure resistances of a few resistors. Without these dumb-bell shaped components, our electricity could not be controlled.
Wow! You are progressing. Its time learn the famous Ohm's law. Without Ohm's law, we would never be able to figure out the right specifications of components that we should choose to make a circuit/idea work. You need to see this lecture just once & remember the Ohm's law. After that, no one can stop you from understanding how circuits really work.
Time for the first glow. LEDs are fascinating. In this video, we would learn about the basic of LEDs, how can we test the color which an LED would produce using a Multimeter and whether a LED is in a working condition or not. And do not forget to memorize the circuit symbol of an LED. Over to you.
Well, this is the most important lecture of this course. Even if you need to watch this twice or thrice, do it. In this video, you are going to learn how to use a breadboard & its internal connections. Once you master the fundamentals of using the board, you would never have to look at this lecture again. So, Do it Right!
This is an add-on lecture that demonstrates a very fundamental skill, how to use a wire cutter and stripper. Anyways, if you are using Jumpers, you can skip this lecture. Choice is yours.
Congrats! You have reached the stage where you are ready to build your first circuit on breadboard. What are you waiting for? Grab the components and build it. Its fun to glow LEDs. If you face any problem, simply download the attached step-by-step visual tutorial.
Now since you have had fun with glowing LEDs, lets measure how many electrons are passing through a unit cross-section of the wire in just 1 second? You are going to measure current in your first real circuit.
So, enjoy the show! Again, if you have any problems in doing this, download the step-by-step presentation below.
Well, we must tell you that you are going at a really good pace. Keep it up. We have a question. Do you think we can control the intensity with which an LED glows using Light? Well, we have an exciting component in this video called LDR (light dependent resistor). Why Wait, Test It.
Ever heard of potentiometers? Well, think of resistors which are variable. Remember those dumb-bell shaped components. Imagine 100s of different resistances that we can get from a single component. Imagine a component which can be used as a fixed resistor, a variable resistor and to create a variable battery which can give you different voltages. Sounds interesting!
Incredibly important, can you control the intensity with which the LED glows or the intensity of sound with which the buzzer beeps? Yes, you can. Find out.
Since you now know about the potentiometer, we should introduce you to a preset which is a smaller version of it and can be operated using a screw driver. Just insert the screw driver inside the slot, rotate it and you change either the resistance or the voltage.
This is a fun experiment. You can control the intensity of two LEDs simultaneously. If the intensity of the one increases, for the other, it decreases. Take two different colored LEDs and enjoy.
Well, this is quite an interesting concept. How can you obtain multiple voltages from a fixed 9 V battery? So, if you can change voltage, you can change current and if you can change current, you can change the intensity with which the LED glows or the loudness of the sound that buzzer produces. And if you could do it all by simply rotating the screw driver? Check out.
You are doing fantastically well! Since now you have worked with one or two LEDs. So, how can you connect multiple LEDs or resistors and divide the electrical energy among them? All of us love Christmas Lights; what is the basic principle behind them? Well, this video explains the series combination. Enjoy!
Do you know that our electrical wiring at home is done in parallel? But, why? What is a parallel combination? Why is it important? Now a days, we use the parallel combination in Christmas lights too. Time to do it and learn.
By now, you might have learned that the LEDs are always used with resistors. You don't want to burn the LEDs. Well, what if we need to connect multiple LED-resistor pairs in parallel? The video shows it all.
Here, comes your first Challenger Circuit! You can make this circuit, show it to your friends and brag about being a cool DIY Maker. The best part, you can control the flow of electricity through different coloured LEDs and make an interesting linear pattern- the first set of LEDs glow, then the second and the third and so-on. Its simply cool.
Well, we believe you are almost close to finishing Level-1 in Electronics. Wait! You need to learn something more! Its switches. Switches are a daily part of our lives (nothing to explain here). But, do you know that technically, if we say the switches are on-off devices, it is wrong. Switches are not defined like this. This video will explain you the fundamentals of switches, concept of pole & throw and how to test a switch using a multimeter.
Enough talking! Lets get back to building circuit with switches, LEDs and resistors. And this time, we will control the flow of current through two LEDs, not just one. Get your hands dirty!
Here comes another exciting project which you might have seen in your home. You control the switching action of a single light using two switches. The most famous application of this project is Staircase Lighting. Have a look and build it. You might come up with more ideas.
During heart attacks, the heart of the patient is shocked to re-establish its normal rhythm. For that, almost 20 amp current is passed through the chest and about 200 joule of electrical energy is transferred in
2 millisecond. This procedure requires 200 watt of power. Do you know how is this power requirement in ambulances. We are talking about 5000 Volt here!
Sit back, relax and enjoy the video.
This is a small and quick experiment. First we charge the capacitor and then discharge it across the LED. Short and sweet. You will simply love it. Pick up the components and do it yourself.
There is a warning! Do not attempt this with any other capacitor or voltage source. Just use the specification that we have used. You may get zapped! Let us create spark.
Well, this video is meant for more advanced users.
Do you want to slow down the rate of charging and discharging? This is the right experiment for you to try on. It is highly recommended for students who are studying about capacitors and want to learn about the charging and discharging processes.
You can experiment with various RC combinations. Simply download the step-by-step visuals of three different cases: 100 uf + 330 R, 100 uf + 10k, 1000 uf + 1k.
In order to understand this lecture, first go through Lecture 32. The lecture is meant for more advanced users. If you finish this, you have completed the race.
CoolJunk is an Ed-tech start-up to help students learn and understand scientific concepts better through fun hands-on experiments and projects. After closely working with and teaching 15,000 students and 100s of physics educators, the company has developed comprehensive hands-on physics-based curricula on electrical & electronics.
CoolJunk brand is known for its quality, innovation and depth. CoolJunk learning kits has been adopted by 100s of high quality schools and thousands of students across 110 Indian cities have used the kits to build academic projects, do self-experimentation and learn hands-on.