Resistor and Capacitor Values 101

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Language: en

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00:00:15.760 00:00:15.770 okay so resistors have a color code
00:00:18.980 00:00:18.990 value as we saw before and we read it
00:00:22.310 00:00:22.320 from left to right like we read or words
00:00:25.759 00:00:25.769 all right so this one's red red brown
00:00:29.000 00:00:29.010 gold okay now the first two are going to
00:00:33.410 00:00:33.420 be actual numbers so this will be a
00:00:35.510 00:00:35.520 number this will be a number the third
00:00:37.520 00:00:37.530 one the brown represents a multiplier
00:00:40.280 00:00:40.290 and the gold represents a tolerance and
00:00:44.090 00:00:44.100 we're gonna use a chart that looks like
00:00:45.410 00:00:45.420 this and you'll have one attached to
00:00:47.029 00:00:47.039 your activity all right so we don't have
00:00:49.220 00:00:49.230 a third digit so I'm just gonna so we
00:00:55.729 00:00:55.739 have a red red brown gold so red red is
00:01:02.660 00:01:02.670 to the second one red is another two and
00:01:10.090 00:01:10.100 our multiplier is Brown so Brown is
00:01:14.660 00:01:14.670 times ten so 22 times 10 is 220 Oh so
00:01:22.310 00:01:22.320 resistance is measured in ohms 220 ohms
00:01:26.090 00:01:26.100 now let's talk about the gold band the
00:01:28.640 00:01:28.650 gold band
00:01:29.539 00:01:29.549 alright Gold is a tolerance this is gold
00:01:32.719 00:01:32.729 my colors kind of wonky I printed out
00:01:35.149 00:01:35.159 weird is 5% so plus or minus 5% okay so
00:01:43.520 00:01:43.530 plus or minus 5% so red red brown gold
00:01:49.910 00:01:49.920 is 2 2 times 10 22 times 10 which is 220
00:01:54.350 00:01:54.360 ohms plus or minus 5% and that is how we
00:01:58.130 00:01:58.140 read this resistors value and this is
00:02:00.800 00:02:00.810 quick and this is
00:02:02.930 00:02:02.940 really fast but that's alright let's do
00:02:05.000 00:02:05.010 one more resistor okay so we're looking
00:02:08.660 00:02:08.670 at the gold band last all right this
00:02:13.490 00:02:13.500 one's brown black orange gold so Brown
00:02:16.280 00:02:16.290 is one black is zero times
00:02:26.110 00:02:26.120 orange orange orange oranges one
00:02:29.150 00:02:29.160 thousand times a thousand there's gonna
00:02:32.210 00:02:32.220 be ten thousand ohms our tolerance the
00:02:37.790 00:02:37.800 gold band our tolerance is 5 so plus or
00:02:42.620 00:02:42.630 minus 5 percent okay so that's a really
00:02:47.930 00:02:47.940 quick way of how to read a resistor
00:02:50.300 00:02:50.310 you'll have the chart to go by so we
00:02:53.840 00:02:53.850 read from left to right first color is a
00:02:56.570 00:02:56.580 number second color is a number third
00:03:03.710 00:03:03.720 color is a multiplier
00:03:06.830 00:03:06.840 well we multiply that first number by
00:03:08.990 00:03:09.000 the first and second number by and the
00:03:12.500 00:03:12.510 last number or the last band is the
00:03:15.860 00:03:15.870 tolerance okay okay now we're going to
00:03:21.050 00:03:21.060 talk about capacitors okay this is a
00:03:23.479 00:03:23.489 capacitor this is actually what we call
00:03:25.580 00:03:25.590 an electrolytic capacitor it actually
00:03:30.770 00:03:30.780 tells you what the value is right there
00:03:36.380 00:03:36.390 a hundred microfarads that's it
00:03:39.620 00:03:39.630 that's how you read an electrolytic
00:03:41.979 00:03:41.989 capacitor value it tells you hundred
00:03:45.860 00:03:45.870 Ference or micro farad's all right easy
00:03:48.680 00:03:48.690 enough right so then we get to these
00:03:50.449 00:03:50.459 little guys this is a ceramic capacitor
00:03:53.360 00:03:53.370 a ceramic disc capacitor and what we do
00:03:56.210 00:03:56.220 for them is we look at the number that's
00:03:58.670 00:03:58.680 on it so this one says 104 okay
00:04:03.610 00:04:03.620 the first digit is the first figure so
00:04:07.190 00:04:07.200 we got a 1 the second digit is the
00:04:11.540 00:04:11.550 second figure so then we
00:04:12.920 00:04:12.930 have a zero okay so right now we're at
00:04:16.490 00:04:16.500 ten and then the third digit is the
00:04:19.249 00:04:19.259 number of zeros after that number so we
00:04:24.200 00:04:24.210 have a number and then we add let's see
00:04:26.290 00:04:26.300 what's it say four four zeros one two
00:04:30.800 00:04:30.810 three four so this is a hundred thousand
00:04:35.439 00:04:35.449 pico farads ceramic capacitors are
00:04:39.050 00:04:39.060 always in pico pico farads all right
00:04:43.159 00:04:43.169 cool that's it we're done
00:04:45.529 00:04:45.539 so first number is an actual number
00:04:48.170 00:04:48.180 second number is an actual number and
00:04:49.969 00:04:49.979 last numbers how many zeros you add so
00:04:53.029 00:04:53.039 ten there's what we had and then we
00:04:55.249 00:04:55.259 added four zeros afterwards and ceramic
00:04:59.089 00:04:59.099 capacitors are measured in pico farads
00:05:02.210 00:05:02.220 remember that ceramic capacitors the
00:05:04.550 00:05:04.560 ones that look like these are measured
00:05:06.290 00:05:06.300 in pico farads that's it we're done
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