Now to the second element in our electrical and electronic components it's also an active element.
It's called a transistor Transistor is a three terminal active component that is used mainly in boosting
or amplifying electrical signals both F and R fringes other application of transistor includes using
it as a switch or amplifier for amplifying voltage or current signals.
Now as you can see this is the physical shape for transistor and high bar high current and voltage transistors
comes and this shape this one is called obesity transistor or pipe boiler junction transistor it's for
current control devices and it comes in and P and or P N.B. types.
Its main function is voltage regulation audio frequency amplification and this is the symbol for that
type frontage store and this is the physical layout the second most common type is field effect transistor
or.
In short it's called fit it's for voltage control devices and it comes in two types and channel and
P channel.
This is the electrical symbol and this is the physical layout.
It's basically used in audio and radio frequency amplification and in USP or universal voltage AC to
DC or DC to AC circuits and it's very common component as well these two elements are very important
and you need to know them in working principle for each of them in order to be able to identify if there
is any fault in them.
We did cover this in the practical section at the end of this course.
So if you don't already know what is a transistor or how it works you can head there and see for yourself
how to twist a transistor or how to check if that transistor is working or not and how different types
of transistors work.
Again there is two main types PDT and fit.
The ability of four is for current control devices.
The fit is for voltage control devices and these are that information that you need.
Basically it consists of collector base and emitter.
This one has a gate drain and source Thanks for watching this lesson.
Next we are going to talk about some of the common electronic and electrical components but that's it
for this lesson.
If you have any question please ask.
In fact you aren't able.