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Now to the second element in our electrical and electronic components it's also an active element.

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It's called a transistor Transistor is a three terminal active component that is used mainly in boosting

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or amplifying electrical signals both F and R fringes other application of transistor includes using

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it as a switch or amplifier for amplifying voltage or current signals.

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Now as you can see this is the physical shape for transistor and high bar high current and voltage transistors

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comes and this shape this one is called obesity transistor or pipe boiler junction transistor it's for

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current control devices and it comes in and P and or P N.B. types.

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Its main function is voltage regulation audio frequency amplification and this is the symbol for that

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type frontage store and this is the physical layout the second most common type is field effect transistor

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or.

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In short it's called fit it's for voltage control devices and it comes in two types and channel and

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P channel.

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This is the electrical symbol and this is the physical layout.

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It's basically used in audio and radio frequency amplification and in USP or universal voltage AC to

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DC or DC to AC circuits and it's very common component as well these two elements are very important

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and you need to know them in working principle for each of them in order to be able to identify if there

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is any fault in them.

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We did cover this in the practical section at the end of this course.

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So if you don't already know what is a transistor or how it works you can head there and see for yourself

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how to twist a transistor or how to check if that transistor is working or not and how different types

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of transistors work.

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Again there is two main types PDT and fit.

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The ability of four is for current control devices.

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The fit is for voltage control devices and these are that information that you need.

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Basically it consists of collector base and emitter.

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This one has a gate drain and source Thanks for watching this lesson.

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Next we are going to talk about some of the common electronic and electrical components but that's it

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for this lesson.

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If you have any question please ask.

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In fact you aren't able.