Now that we have all the tools needed for our device maintenance we need to get a clear idea about the
basic electronic components
first who are going to start with passive devices passive means devices or components which do not require
external source to their operation.
The first one in this test is resistors as you can see in this image this is how a resistor looks like
and it usually comes with color bands.
That is the store is at all terminal passive component that opposes the flow of current.
Which means that it reduces the electric current passing through its and at the same time lowers the
voltage liberals in a circuit this component is covered in details in the practical section of this
course the second component is capacitor This is the physical play out of a a store.
It's a two terminal passive component as you can see it has two legs that is used to store energy it
can be used in a circuit as a small thing coupling and bypass component.
Usually this type of capacitors is called polarized capacitor it has polarity and as you can see this
sign and that gray area indicates that this is the negative terminal and this is the positive terminal.
Now if there is no gray area you can identify the negative terminal.
It's the shortest among these two terminals and another time is that ceramic capacitor.
It comes without polarity and it's like a circle.
Again this component is covered in depth in the practical section of at the end of this course
now the third component is inductor.
As you can see this is an inductor.
It's a two terminal.
It has two terminals passive Cambone on that store energy in the form of magnetic field.
It is used in circuits as a chalk and reactor in r if receiver and transmitter circuits so in any radio
frequency circuit in any of m or M circuits that transmit or receive radio signals you will find that
inductor and it's the third time in our passive components.
Again all of these components are covered in the practical section of this course in details but this
was like a quick overview of these components.
Next we are going to talk about the active components but that's it for this lesson.
Thanks for watching.
This is Ashraf from educational engineering team.