1 00:00:00,810 --> 00:00:01,600 Hello. 2 00:00:01,610 --> 00:00:10,660 Now let's look at measuring and practical we will be using some concepts on the count measurement exercise 3 00:00:10,990 --> 00:00:13,690 that would be covered in more details later. 4 00:00:13,690 --> 00:00:15,530 So please be patient. 5 00:00:15,610 --> 00:00:17,760 It will all come together to the end. 6 00:00:19,430 --> 00:00:30,590 In the following exercise you will use various thoughts to limit the current flow in assemble Cirque. 7 00:00:30,610 --> 00:00:34,350 This is a separate board or the brutal war. 8 00:00:34,360 --> 00:00:40,390 This is simply a ball that you use to test electronic circuits. 9 00:00:40,390 --> 00:00:48,250 You can place your elements here and connect ball then you can see how the circuit functioned before 10 00:00:48,730 --> 00:00:51,640 building a more permanent prototype. 11 00:00:52,280 --> 00:00:56,660 Brutus stands for prototyping. 12 00:00:57,070 --> 00:00:59,580 You need to understand the difference between here. 13 00:01:00,010 --> 00:01:07,600 The interconnected halls here as you can see each file false here alkalinity together horizontally not 14 00:01:07,600 --> 00:01:10,750 vertically and the same is here. 15 00:01:10,750 --> 00:01:15,790 These five are connected together so you can consider all of them as one. 16 00:01:15,790 --> 00:01:27,730 Ben The same goes here and here while these two blue and red are called Bower rails so uh from here 17 00:01:28,030 --> 00:01:29,940 to here to this bend. 18 00:01:30,250 --> 00:01:34,300 This is the negative 11 well and from here to here. 19 00:01:34,390 --> 00:01:36,030 This is the positive our will. 20 00:01:36,100 --> 00:01:37,230 So a full blast. 21 00:01:37,510 --> 00:01:39,840 Let's say an involved and down. 22 00:01:40,060 --> 00:01:43,140 This is the ground wire and this is the line vault wire. 23 00:01:43,840 --> 00:01:49,200 If we connect them here then all of these spins will get involved. 24 00:01:49,210 --> 00:01:59,530 You can uh connect led to these bands and you can connect to wire and take ball from these spins while 25 00:01:59,530 --> 00:02:06,850 the other bends here and that the vertical line uh are connected to ground. 26 00:02:07,180 --> 00:02:16,530 So this is for connected to other circuit components uh here and here to our underground and it's a 27 00:02:16,530 --> 00:02:21,220 really useful board as you can see uh. 28 00:02:21,220 --> 00:02:28,100 Again the vertical rows in the center that have red and blue lines next to them are connected together. 29 00:02:28,240 --> 00:02:31,540 The holes in the red row are connected together. 30 00:02:31,540 --> 00:02:34,900 The holes in the plural are connected together. 31 00:02:34,900 --> 00:02:44,860 The ball as Shaw are configured to have these raw as power sources red for both to undo foreground or 32 00:02:44,890 --> 00:02:45,730 negative. 33 00:02:45,730 --> 00:02:51,510 There are four black all of our four banks of horizontal rows. 34 00:02:51,640 --> 00:02:53,710 As you can see here this is one bank. 35 00:02:53,710 --> 00:02:55,170 Second bank failed. 36 00:02:55,300 --> 00:02:58,870 And fourth one they are connected together. 37 00:02:58,870 --> 00:03:04,690 The horizontal rows are aware of the components will be interconnected and the vertical center role 38 00:03:04,780 --> 00:03:11,800 will be connected to the circuit bar to provide the other circuit element with board. 39 00:03:11,800 --> 00:03:15,760 Now let's look at measuring current basic circuit. 40 00:03:16,210 --> 00:03:25,150 As you can see here this is a disaster that we will use to limit talent so we won't damage our digital 41 00:03:25,150 --> 00:03:26,780 multimeter. 42 00:03:26,780 --> 00:03:31,140 And this is a battery a line will matter in that case. 43 00:03:31,140 --> 00:03:36,730 And this is our Volt or meter that is connected through the circuit. 44 00:03:36,760 --> 00:03:39,550 As you can see here this is the opposite of the terminal. 45 00:03:39,550 --> 00:03:46,780 It's not connected directly to the resistor we cut the circuit and place the Volt on meter right in 46 00:03:46,780 --> 00:03:54,120 the middle so that the current will bust through the Volt or meter. 47 00:03:54,120 --> 00:04:00,450 Now let's look at the circuit and practice first current measurement. 48 00:04:00,500 --> 00:04:06,470 Set up the circuit using 100 ohm resistors brown black brown. 49 00:04:06,500 --> 00:04:15,410 You need to have 100 on the store like this one as you can see now connect our bulletin board source 50 00:04:15,920 --> 00:04:22,250 and connect another world to the top end of that is a story as you can see this is the host of our source 51 00:04:22,310 --> 00:04:30,260 and this is the negative one source we lost connect the first with the stone wire to the positive and 52 00:04:31,010 --> 00:04:39,620 we must connect the other while our two are the other third one of that is a stop to our out then the 53 00:04:39,620 --> 00:04:48,030 black terminal or the vault on meter we need to see the vault on meet our current skill to 200 million. 54 00:04:48,920 --> 00:04:51,570 As you can see here two hundred million. 55 00:04:51,710 --> 00:05:03,160 And we need to place that probe in the right place here in the million arm connector slot and the tin 56 00:05:03,530 --> 00:05:06,830 connector without connecting the battery. 57 00:05:06,830 --> 00:05:13,390 Barack this touching the vault on metal probes to the exposed wire ends. 58 00:05:13,480 --> 00:05:19,200 You need to take some time to understand this example before going further. 59 00:05:19,200 --> 00:05:21,580 Um now let's see. 60 00:05:22,180 --> 00:05:30,790 Let's connect all battery and measure the current with the vault on me toss it to the 200 minute meter. 61 00:05:30,840 --> 00:05:38,960 Really the current scale touch the black lead to the wire hooked to the high side of that is a store 62 00:05:39,870 --> 00:05:47,510 didn't touch that it lead to the lead coming from the positive side of the battery nor the vault on 63 00:05:47,510 --> 00:05:48,050 radar. 64 00:05:48,050 --> 00:05:54,230 It will give you eighty nine point two and this is in MGS. 65 00:05:54,320 --> 00:06:00,780 So the control I saw that was a store is eighty nine point two. 66 00:06:00,820 --> 00:06:08,110 Now you need to understand that we got the reading in MG. 67 00:06:08,180 --> 00:06:20,280 So if we wanted and arms it will be point 0 8 9 2 amps you must multiply that number by uh order divided 68 00:06:20,280 --> 00:06:23,850 by 1000 to get that reading. 69 00:06:25,440 --> 00:06:32,160 Now three locked here as you can see if we reverse the Volt or meter leads we cannot that the reading 70 00:06:32,280 --> 00:06:37,830 became negative eighty eight point zero 71 00:06:40,340 --> 00:06:41,150 um. 72 00:06:41,210 --> 00:06:45,750 This is obvious since we reversed the two blobs. 73 00:06:45,920 --> 00:06:56,960 We will get a negative reading now uh let's return to the fold on reads a Volt on probs to their original 74 00:06:56,960 --> 00:07:04,170 position that it is connected to the battery change the Volt on current range is down and know that 75 00:07:04,180 --> 00:07:11,840 simply reading what's the best range for measuring the current from a nine volt source through a hundred 76 00:07:11,910 --> 00:07:12,900 on resistor. 77 00:07:12,990 --> 00:07:20,930 You'll note that when you reach the 20 million range it will give you one. 78 00:07:20,960 --> 00:07:24,870 And we did explain what one mean it means out of range. 79 00:07:25,660 --> 00:07:26,270 Uh. 80 00:07:26,330 --> 00:07:36,430 And you Miss uh must choose the right range while in 200 million range. 81 00:07:36,440 --> 00:07:45,870 It gave eighty nine point two Now let's look and while the circuit with one killer on register brown 82 00:07:45,870 --> 00:07:52,960 black red this is that resistor and measure current with 200 million brains. 83 00:07:54,180 --> 00:07:55,320 Let's see the results. 84 00:07:55,320 --> 00:07:57,570 What is this strange times out of control. 85 00:07:57,620 --> 00:08:07,320 One kilo resistor as you can see in 200 million brands will give us zero on the left which means that 86 00:08:07,680 --> 00:08:11,300 we can get a more ambitious year thing. 87 00:08:11,880 --> 00:08:20,970 So if we switch it to to 20 million will give us nine point four four million. 88 00:08:21,630 --> 00:08:27,030 And if we switch to 2000 Micron it will give us out of range. 89 00:08:27,480 --> 00:08:39,780 So this is the best um let's say the best range for measuring you must uh test that for so uh to get 90 00:08:40,990 --> 00:08:50,040 a clue how much control box and what is the best highest resolution uh scale. 91 00:08:50,040 --> 00:08:52,890 Now as you can see here uh let's watch out. 92 00:08:53,290 --> 00:08:53,750 That's it. 93 00:08:53,750 --> 00:08:59,170 To do that in kill or on resistor brown black orange. 94 00:08:59,280 --> 00:09:06,980 These are the three colors this measure of the current with uh 2000 micro brands. 95 00:09:07,290 --> 00:09:18,250 As you can see uh give us nine hundred fifty five micro um these are uh different lab results. 96 00:09:19,110 --> 00:09:26,700 Uh if we did another measurement uh as you can see that is strange for that intel on what the store 97 00:09:26,850 --> 00:09:35,700 is that 2000 Micron since if we choose that 100 micron it will give us out of range now. 98 00:09:35,700 --> 00:09:43,400 Another example let's say that this is our last example of this use of size using 100 kilometers a store. 99 00:09:43,530 --> 00:09:47,340 Let's start uh 200 million. 100 00:09:47,340 --> 00:09:54,510 Scale and read the current using each of the four ranges and record the result all this will be a good 101 00:09:54,630 --> 00:10:02,940 opportunity to again go over converting current from two million amps to make rams and also this threat 102 00:10:03,360 --> 00:10:07,510 how to remind them is strange for the current being measured. 103 00:10:07,560 --> 00:10:13,800 As you can see in case of 100 kilometers a store brown black yellow. 104 00:10:13,800 --> 00:10:18,560 If we start to do that 2000 merely told us give us zero point zero nine. 105 00:10:19,360 --> 00:10:27,050 And going further out will give us the highest higher resolution depending on the range. 106 00:10:27,670 --> 00:10:32,310 That's it for the practical bars for measuring calm. 107 00:10:32,380 --> 00:10:35,140 Next we will be measuring the resistance. 108 00:10:35,140 --> 00:10:36,190 Thanks for watching. 109 00:10:36,190 --> 00:10:37,990 This is education and engineering team.