/ News & Press / Video / How to Test a Capacitor with a Multimeter and LCR Meter

How to Test a Capacitor with a Multimeter and LCR Meter

WEBVTT
Kind: captions
Language: en

00:00:00.600
[Music]
00:00:04.539 00:00:04.549 hello
00:00:05.749 00:00:05.759 in today's review will demonstrate how
00:00:07.880 00:00:07.890 to test a capacitor with a multimeter
00:00:09.740 00:00:09.750 for the initial visual check we
00:00:11.780 00:00:11.790 recommend that you read an article on
00:00:13.339 00:00:13.349 our website so let's start by checking
00:00:16.519 00:00:16.529 electrolytic capacitors of 220 and 1000
00:00:20.359 00:00:20.369 micro farad from breakdown before you
00:00:23.000 00:00:23.010 connect capacitors to a multimeter be
00:00:25.160 00:00:25.170 sure to discharge them so as not to
00:00:26.960 00:00:26.970 damage the device itself you can use a
00:00:29.450 00:00:29.460 regular screwdriver the main point is
00:00:32.479 00:00:32.489 that the multimeter will charge the
00:00:34.430 00:00:34.440 capacitor with its battery when the
00:00:39.440 00:00:39.450 capacitor is charging the current value
00:00:41.630 00:00:41.640 is decreasing while resistance is
00:00:44.090 00:00:44.100 increasing when the capacitor is charged
00:00:46.520 00:00:46.530 and operates properly current should be
00:00:49.220 00:00:49.230 zero and resistance should be equal to
00:00:51.110 00:00:51.120 infinity which corresponds to unit value
00:00:53.479 00:00:53.489 on the multimeter display resistance
00:00:55.760 00:00:55.770 should be growing gradually without
00:00:57.200 00:00:57.210 surges with high value capacitors is
00:01:05.630 00:01:05.640 better to conduct a multimeter about the
00:01:07.310 00:01:07.320 test their charging will take a while
00:01:09.710 00:01:09.720 and is better to check continuity to
00:01:11.899 00:01:11.909 avoid waiting
00:01:31.660 00:01:31.670 let's show clearly what the multimeter
00:01:34.130 00:01:34.140 shows if the capacitor has a breakdown
00:01:36.529 00:01:36.539 the capacitor resistance is equal to
00:01:38.810 00:01:38.820 zero while being checked for continuity
00:01:40.789 00:01:40.799 the multimeter will beep similarly to
00:01:43.249 00:01:43.259 where it notifies of a short-circuit a
00:01:45.340 00:01:45.350 non power capacitor is checked the same
00:01:48.020 00:01:48.030 as the polar one the only difference is
00:01:50.630 00:01:50.640 that it's not necessary to observe the
00:01:52.730 00:01:52.740 polarity of connecting probes and
00:01:54.260 00:01:54.270 measure at maximum ranges of resistance
00:01:59.980 00:01:59.990 when measuring resistance it's a good
00:02:02.600 00:02:02.610 idea to use an analog multimeter the
00:02:04.690 00:02:04.700 display of a digital multimeter showed a
00:02:07.279 00:02:07.289 chaotic change in numbers when the
00:02:09.499 00:02:09.509 resistance increased when using an
00:02:11.960 00:02:11.970 analog device it is possible to study
00:02:14.120 00:02:14.130 the gradual charging process in detail
00:02:16.180 00:02:16.190 that the capacitor works fine the error
00:02:19.190 00:02:19.200 of the multimeter should first deviate
00:02:21.289 00:02:21.299 to zero and approach infinity in the
00:02:23.420 00:02:23.430 process of charging
00:02:41.580 00:02:41.590 it is better to check the capacitor with
00:02:44.050 00:02:44.060 a multimeter that has a capacitance
00:02:45.850 00:02:45.860 measurement function it can be used to
00:02:48.760 00:02:48.770 determine the degree to which the
00:02:50.500 00:02:50.510 capacitor loses its properties to
00:02:52.570 00:02:52.580 accumulate charge according to its
00:02:54.130 00:02:54.140 rating let's check the 4700 micro farad
00:02:57.550 00:02:57.560 capacitor
00:02:58.150 00:02:58.160 following the polarity of connecting
00:03:00.130 00:03:00.140 probes permissible deviation is not more
00:03:02.740 00:03:02.750 than 30% do you remember our capacitor
00:03:17.050 00:03:17.060 with a breakdown which was detected by a
00:03:18.880 00:03:18.890 commercial model bidder for clarity we
00:03:21.550 00:03:21.560 will show what multimeter will display
00:03:23.290 00:03:23.300 when measuring capacitance as with
00:03:34.180 00:03:34.190 measuring resistance the value is equal
00:03:36.100 00:03:36.110 to infinity the next step is to test
00:03:39.760 00:03:39.770 identical polar 6800 micro farad
00:03:42.610 00:03:42.620 capacitors from the same board first of
00:03:45.730 00:03:45.740 all we observe deviation of capacity
00:03:47.770 00:03:47.780 from its rating value as well as an even
00:03:49.960 00:03:49.970 charge accumulation therefore we
00:03:52.450 00:03:52.460 recommend checking capacitors in devices
00:03:54.160 00:03:54.170 from time to time since they have the
00:03:56.620 00:03:56.630 ability to dry out
00:04:11.070 00:04:11.080 to further test the capacitor the LCR
00:04:13.900 00:04:13.910 meter is used it can be used to
00:04:16.810 00:04:16.820 determine the growth of peracetic value
00:04:18.430 00:04:18.440 such as ESR let's test the 100 micro
00:04:29.350 00:04:29.360 farad 63 volt capacitor to check the
00:04:33.520 00:04:33.530 received ESR value you can use the ESR
00:04:35.740 00:04:35.750 value of an identical new capacitor we
00:04:37.960 00:04:37.970 use special look-up tables according to
00:04:41.740 00:04:41.750 Bob Parker stable our capacitor is okay
00:04:47.270 00:04:47.280

Sales phone