WEBVTT 1 00:00:00.570 --> 00:00:01.920 In this section of the course, 2 00:00:01.920 --> 00:00:03.180 we're going to cover the concepts 3 00:00:03.180 --> 00:00:05.190 surrounding cooling and power. 4 00:00:05.190 --> 00:00:06.540 Now, when building a computer, 5 00:00:06.540 --> 00:00:08.100 it's important to consider cooling 6 00:00:08.100 --> 00:00:10.170 because the computer and its various components 7 00:00:10.170 --> 00:00:11.880 can generate a lot of heat. 8 00:00:11.880 --> 00:00:13.710 For example, in most computers, 9 00:00:13.710 --> 00:00:15.000 the central processing unit 10 00:00:15.000 --> 00:00:16.800 generates an enormous amount of heat. 11 00:00:16.800 --> 00:00:19.080 And if that heat isn't removed from the processor, 12 00:00:19.080 --> 00:00:20.100 it can actually burn up 13 00:00:20.100 --> 00:00:22.350 or melt some of its sensitive components. 14 00:00:22.350 --> 00:00:23.670 To help remove this heat, 15 00:00:23.670 --> 00:00:25.890 we can use passive cooling, active cooling, 16 00:00:25.890 --> 00:00:27.180 and even liquid cooling 17 00:00:27.180 --> 00:00:29.430 as you're going to learn about in this section. 18 00:00:29.430 --> 00:00:31.650 Now, computers also need power to operate 19 00:00:31.650 --> 00:00:33.750 because they're electronic devices. 20 00:00:33.750 --> 00:00:35.340 So it's important that you select 21 00:00:35.340 --> 00:00:36.780 the right power supply unit 22 00:00:36.780 --> 00:00:39.150 to provide adequate power to your system. 23 00:00:39.150 --> 00:00:42.450 Also, computers rely on a type of power known as DC 24 00:00:42.450 --> 00:00:43.680 or direct current. 25 00:00:43.680 --> 00:00:45.240 Specifically, you're going to learn 26 00:00:45.240 --> 00:00:49.140 that computers rely on 3.3 volts DC, 5 volts DC, 27 00:00:49.140 --> 00:00:50.640 and 12 volts DC, 28 00:00:50.640 --> 00:00:52.890 but our wall outlets are going to provide us with power 29 00:00:52.890 --> 00:00:56.490 of using alternating current of either 120 volts AC 30 00:00:56.490 --> 00:00:57.720 here in the United States 31 00:00:57.720 --> 00:01:01.800 or 230 volts AC if you live in Europe or Asia. 32 00:01:01.800 --> 00:01:05.310 To convert that higher voltage AC into lower voltage DC, 33 00:01:05.310 --> 00:01:08.070 a computer's power supply is going to contain a transformer 34 00:01:08.070 --> 00:01:09.270 to reduce that voltage, 35 00:01:09.270 --> 00:01:10.890 as well as filters and regulators 36 00:01:10.890 --> 00:01:13.260 to create the consistent voltage levels that are needed 37 00:01:13.260 --> 00:01:14.940 by our various computer components 38 00:01:14.940 --> 00:01:18.210 at 3.3, 5, and 12 volts DC. 39 00:01:18.210 --> 00:01:20.730 So, our focus in this section of the course 40 00:01:20.730 --> 00:01:23.340 is going to be on domain three, Hardware. 41 00:01:23.340 --> 00:01:24.780 As we go through this section, 42 00:01:24.780 --> 00:01:27.180 we're going to cover parts of objective 3.4, 43 00:01:27.180 --> 00:01:28.800 which states given a scenario, 44 00:01:28.800 --> 00:01:31.530 you must be able to install and configure motherboards, 45 00:01:31.530 --> 00:01:35.160 central processing units or CPUs, and add-on cards, 46 00:01:35.160 --> 00:01:36.810 where we're going to be focusing specifically 47 00:01:36.810 --> 00:01:39.630 on the different types of cooling that's used in a computer 48 00:01:39.630 --> 00:01:42.210 and the different types of power connectors involved. 49 00:01:42.210 --> 00:01:45.000 We're also going to fully cover objective 3.5, 50 00:01:45.000 --> 00:01:46.560 which states given a scenario, 51 00:01:46.560 --> 00:01:47.820 you must be able to install 52 00:01:47.820 --> 00:01:50.100 or replace the appropriate power supply. 53 00:01:50.100 --> 00:01:51.750 Now, as we begin this section, 54 00:01:51.750 --> 00:01:53.340 we're going to start talking about the different types 55 00:01:53.340 --> 00:01:55.320 of active and passive cooling systems 56 00:01:55.320 --> 00:01:57.480 that you can use in a typical computer. 57 00:01:57.480 --> 00:02:00.360 After that, we'll spend an entire lesson on liquid cooling 58 00:02:00.360 --> 00:02:03.090 because this is very popular with gamers and other users 59 00:02:03.090 --> 00:02:04.830 who have processor-intensive systems 60 00:02:04.830 --> 00:02:06.960 that are generating an enormous amount of heat. 61 00:02:06.960 --> 00:02:09.180 Then, we'll move into a short demonstration 62 00:02:09.180 --> 00:02:11.250 where you're going to learn how to install active cooling 63 00:02:11.250 --> 00:02:13.620 and passive cooling into a computer. 64 00:02:13.620 --> 00:02:15.570 This includes applying the thermal paste, 65 00:02:15.570 --> 00:02:16.770 installing a heat sink, 66 00:02:16.770 --> 00:02:18.930 and how to install cooling fans for your CPU 67 00:02:18.930 --> 00:02:21.390 and multiple fans for the case itself. 68 00:02:21.390 --> 00:02:23.640 After that, we'll start looking at power. 69 00:02:23.640 --> 00:02:24.473 We're going to start out 70 00:02:24.473 --> 00:02:27.030 by covering the power supply unit or PSU, 71 00:02:27.030 --> 00:02:28.740 and then move into the different power connectors 72 00:02:28.740 --> 00:02:30.630 that are provided by a power supply unit 73 00:02:30.630 --> 00:02:32.100 in a typical computer. 74 00:02:32.100 --> 00:02:33.960 Next, we'll move into the different input 75 00:02:33.960 --> 00:02:35.070 and output voltages 76 00:02:35.070 --> 00:02:37.920 that are used around the world within a computer system. 77 00:02:37.920 --> 00:02:39.180 And then, we're going to move 78 00:02:39.180 --> 00:02:40.950 into a discussion of wattage ratings 79 00:02:40.950 --> 00:02:43.560 so you can pick out the right power supply for your computer 80 00:02:43.560 --> 00:02:45.690 based on the different components you're planning to install 81 00:02:45.690 --> 00:02:46.830 in that computer. 82 00:02:46.830 --> 00:02:49.410 For example, if you're using a gaming PC, 83 00:02:49.410 --> 00:02:51.780 it's going to require a lot more wattage and power 84 00:02:51.780 --> 00:02:53.610 than does a standard desktop computer 85 00:02:53.610 --> 00:02:55.980 that's used in a typical office environment. 86 00:02:55.980 --> 00:02:57.960 Finally, I'm going to demonstrate the proper way 87 00:02:57.960 --> 00:03:00.090 to install a power supply into a computer, 88 00:03:00.090 --> 00:03:01.830 including the proper safety precautions 89 00:03:01.830 --> 00:03:02.940 that you need to utilize 90 00:03:02.940 --> 00:03:05.580 to do this without hurting yourself or your computer. 91 00:03:05.580 --> 00:03:09.060 So, let's get started into our journey of cooling and power 92 00:03:09.060 --> 00:03:10.560 in this section of the course.