Testing different types of capacitors on the performance

How to check the ceramic capacitor?

Capacitors are polar (electrolytic) and non-polar, for example, ceramic.In this type of devices as possible to use various dielectric materials such as glass, air, paper.The process of measuring device capacitance ceramic dielectric such:

1. necessary to switch the multimeter to resistance measurement mode.
2. necessary that the digital multimeter has been exposed is the maximum limit of measurement.
3. configuring the instrument, probes put to the legs of the capacitor.

If the item is working, then the instrument will show a value that is greater than 2 megohms.If the received impedance does not exceed 2 MW, it inoperable.

important to note that during the measurement does not need to touch the schupam hands, as it can significantly affect the quality of the measurement.It will happen for the simple reason that the resistance of the human body is very small, and the leakage resistance is much greater than his.Consequently, current will pass through the body, i.e. by a smaller resistance, and not through the capacitor.On the multimeter will show the human resistance, that does not apply to our problem.

How to check the electrolytic capacitor?

Measure the capacitor can also use an ohmmeter, which is a component of the meter.Video verification in this case will be a little different from a video in which check performance of the ceramic capacitor.Leak resistance of high-quality polar capacitors will exceed 100MOm.Step by step guide:

1. Before starting the test it is important to pre-discharge.Discharge can be done by shorting the unit's feet.
2. The instrument need to set the measurement mode, which corresponds to the value of 100 ohms resistance.
3. Two conclusions multimeter is necessary to touch the legs of the capacitor.It is important that the red lead to the positive terminal of touch, and the left - to the negative.
4. If a first test on the display the resistance value has exceeded the value of 100k, the item works well.

How to check storage capacity?

multimeter with measurement of capacity is needed in order to identify faults such as the loss of capacity or interruption.If there was a break, the capacitor loses its capacity.You can also check the start capacitor C via capacitance measurement mode.Pomeroy capacitance as follows:

1. Set up the multimeter to capacitance measurement mode.
2. Connect the test leads to the capacitor terminals DMM twice (at the time of the second connecting terminals must be swapped).
3. forward to the results of measurements and compare them.
4. If the first measurement on a zero screen, and at the second - the line, this means that the work piece.If the results do not differ, it is faulty.

The above instructions shall settle the question, which is how to ring capacitor.Continuity will help determine the loss of performance parts and replace it.