-: In this section of the course,
we're going to cover the concepts
surrounding cooling and power.
Now, when building a computer,
it's important to consider cooling
because the computer and its various components
can generate a lot of heat.
For example, in most computers,
the central processing unit
generates an enormous amount of heat.
And if that heat isn't removed from the processor,
it can actually burn up
or melt some of its sensitive components.
To help remove this heat,
we can use passive cooling, active cooling,
and even liquid cooling
as you're going to learn about in this section.
Now, computers also need power to operate
because they're electronic devices.
So it's important that you select
the right power supply unit
to provide adequate power to your system.
Also, computers rely on a type of power known as DC
or direct current.
Specifically, you're going to learn
that computers rely on 3.3 volts DC, 5 volts DC,
and 12 volts DC,
but our wall outlets are going to provide us with power
of using alternating current of either 120 volts AC
here in the United States
or 230 volts AC if you live in Europe or Asia.
To convert that higher voltage AC into lower voltage DC,
a computer's power supply is going to contain a transformer
to reduce that voltage,
as well as filters and regulators
to create the consistent voltage levels that are needed
by our various computer components
at 3.3, 5, and 12 volts DC.
So, our focus in this section of the course
is going to be on domain three, Hardware.
As we go through this section,
we're going to cover parts of objective 3.4,
which states given a scenario,
you must be able to install and configure motherboards,
central processing units or CPUs, and add-on cards,
where we're going to be focusing specifically
on the different types of cooling that's used in a computer
and the different types of power connectors involved.
We're also going to fully cover objective 3.5,
which states given a scenario,
you must be able to install
or replace the appropriate power supply.
Now, as we begin this section,
we're going to start talking about the different types
of active and passive cooling systems
that you can use in a typical computer.
After that, we'll spend an entire lesson on liquid cooling
because this is very popular with gamers and other users
who have processor-intensive systems
that are generating an enormous amount of heat.
Then, we'll move into a short demonstration
where you're going to learn how to install active cooling
and passive cooling into a computer.
This includes applying the thermal paste,
installing a heat sink,
and how to install cooling fans for your CPU
and multiple fans for the case itself.
After that, we'll start looking at power.
We're going to start out
by covering the power supply unit or PSU,
and then move into the different power connectors
that are provided by a power supply unit
in a typical computer.
Next, we'll move into the different input
and output voltages
that are used around the world within a computer system.
And then, we're going to move
into a discussion of wattage ratings
so you can pick out the right power supply for your computer
based on the different components you're planning to install
in that computer.
For example, if you're using a gaming PC,
it's going to require a lot more wattage and power
than does a standard desktop computer
that's used in a typical office environment.
Finally, I'm going to demonstrate the proper way
to install a power supply into a computer,
including the proper safety precautions
that you need to utilize
to do this without hurting yourself or your computer.
So, let's get started into our journey of cooling and power
in this section of the course.