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Now that we have all the tools needed for our device maintenance we need to get a clear idea about the

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basic electronic components

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first who are going to start with passive devices passive means devices or components which do not require

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external source to their operation.

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The first one in this test is resistors as you can see in this image this is how a resistor looks like

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and it usually comes with color bands.

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That is the store is at all terminal passive component that opposes the flow of current.

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Which means that it reduces the electric current passing through its and at the same time lowers the

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voltage liberals in a circuit this component is covered in details in the practical section of this

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course the second component is capacitor This is the physical play out of a a store.

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It's a two terminal passive component as you can see it has two legs that is used to store energy it

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can be used in a circuit as a small thing coupling and bypass component.

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Usually this type of capacitors is called polarized capacitor it has polarity and as you can see this

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sign and that gray area indicates that this is the negative terminal and this is the positive terminal.

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Now if there is no gray area you can identify the negative terminal.

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It's the shortest among these two terminals and another time is that ceramic capacitor.

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It comes without polarity and it's like a circle.

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Again this component is covered in depth in the practical section of at the end of this course

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now the third component is inductor.

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As you can see this is an inductor.

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It's a two terminal.

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It has two terminals passive Cambone on that store energy in the form of magnetic field.

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It is used in circuits as a chalk and reactor in r if receiver and transmitter circuits so in any radio

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frequency circuit in any of m or M circuits that transmit or receive radio signals you will find that

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inductor and it's the third time in our passive components.

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Again all of these components are covered in the practical section of this course in details but this

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was like a quick overview of these components.

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Next we are going to talk about the active components but that's it for this lesson.

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Thanks for watching.

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This is Ashraf from educational engineering team.