E-series of preferred numbers
Imagine you have some blocks that you want to stack on top of each other. But you want to make sure they all fit together nicely, without any gaps.
Now, when you look at these blocks, you notice that they come in different sizes, but some of them are too big or too small to fit well with the others. So, how can you make sure you choose the right sizes that fit well together?
That's where the e-series of preferred numbers come in. It's like a guide that tells you which sizes of blocks to choose so that they fit together nicely.
There are different e-series, but the most common one is the E12 series. It goes like this:
1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2
Each number in this series is a little bigger than the one before. But the difference between each number is not exactly the same.
For example, the difference between 1.0 and 1.2 is 0.2. Then, the difference between 1.2 and 1.5 is 0.3. And so on.
This may seem a bit confusing, but it's actually very helpful. Let's say you need a resistor (a little component that controls the flow of electricity) for your project, and you want it to be around 2 kilo-ohms. You can look at the E12 series and see that 2.2 kilo-ohms is the closest value in the series.
This means that you can be sure that this resistor will fit well with other components in your project.
In summary, the e-series of preferred numbers is a guide that helps you choose the right sizes or values of components for your projects, so that they fit well together. It's like a friend who always knows which block to choose to keep your tower nice and sturdy!
Now, when you look at these blocks, you notice that they come in different sizes, but some of them are too big or too small to fit well with the others. So, how can you make sure you choose the right sizes that fit well together?
That's where the e-series of preferred numbers come in. It's like a guide that tells you which sizes of blocks to choose so that they fit together nicely.
There are different e-series, but the most common one is the E12 series. It goes like this:
1.0, 1.2, 1.5, 1.8, 2.2, 2.7, 3.3, 3.9, 4.7, 5.6, 6.8, 8.2
Each number in this series is a little bigger than the one before. But the difference between each number is not exactly the same.
For example, the difference between 1.0 and 1.2 is 0.2. Then, the difference between 1.2 and 1.5 is 0.3. And so on.
This may seem a bit confusing, but it's actually very helpful. Let's say you need a resistor (a little component that controls the flow of electricity) for your project, and you want it to be around 2 kilo-ohms. You can look at the E12 series and see that 2.2 kilo-ohms is the closest value in the series.
This means that you can be sure that this resistor will fit well with other components in your project.
In summary, the e-series of preferred numbers is a guide that helps you choose the right sizes or values of components for your projects, so that they fit well together. It's like a friend who always knows which block to choose to keep your tower nice and sturdy!
Related topics others have asked about: