Learn the best way to read the schematic | Ewall

  • calendar_today  Mar, 21 2019
  • visibility  671

Today, in this tutorial, we’re going to explore the right way of reading the schematic diagrams. One of the most confusing parts in the schematic diagram is to understand the circuits and their assembling on the breadboard. This guide is for all electronic enthusiasts and we will suggest all electronic enthusiasts read this guide carefully.

Remember, reading the circuits is a kind of art that will help you in building your electronic project. One more thing we want to mention here is that read about other electronic components and their functions. This will help you in building projects more accurately.

At first, we will let you know about

1) Symbols

In the above picture, we’ve mentioned some of the essential symbols that are mostly used for all of the components. You must learn them by heart. It is a good habit to keep a guide, one these terms, you forgot some. Don’t be panic. It’s not rocket science. Just Stay with us.

2) Understanding of connected parts


If we talk about connecting wires, then remember, physical parts are connected via wires. In the given art, you can easily take a glance at the lines that are going from one point to another. Here once again, we want to say to our dear students that there is no rocket science in it. It’s just mean, connect them with a wire. And then you ever you see that the lines are crossing in a diagram, then it means that you should not connect the wires with them.

3) Wait, we can’t leave polarity alone


Remember, certain electronic components to circuit boards are polarized. It means that the one side is negative and the other side is positive. Polarity is incorporated in a symbol for most symbols. The easiest way of finding polarity of any physical part is that see which were made of lead on the component is tall. In the picture, the longer lead is positive.

4) Are you ready for your first schematic diagram

As you’ve passed through the essentials, let’s start making our first schematic. So let’s dichotomize the circuit.

We’re going to make a schematic diagram for a flashlight. So let’s get started. We’ll take a start from making schematic for battery. For that, as you’ve studied in the polarity section that the take a longer part which is positive. Take a nine-volt battery. Moreover, you can see that there is a line which is connected with the positive part. And here comes the next step in which you can see there is a little door to which you can easily close and open means, On and Off. Here, the procedure is a little bit reverse. When you’ll open the door, the connection will become off and when you’ll close the door for passing the current, the connection will become on. Now, you’re thinking, where the electricity is going? Good Question, the answer is, the electricity is going toward the resistor. And this is the sign or you can say symbol that you must memorize it. You’ll always face these symbols in each and every schematic. Yes, we are talking about resistor symbol. If we talk about the resistor, then it is a kind of device that is used for passing an electric current and that’s what the symbol is showing us in the third part. Now the final and fourth part is triangle shaped names as a diode. A diode is a kind of device having two terminals which allows the current to flow in one direction. So, in the present case, light beaming diode, or LED. So remember, LED’s are polarized. Always place them in the right way. Now, only one part is left and that is a negative part of an LED which is connected back to the negative part of the battery.


Congrats! The circuit is completed.