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A capacitance meter is a piece of electronic test equipment used to measure capacitance, [1] mainly of discrete capacitors. Depending on the sophistication of the meter, it may display the capacitance only, or it may also measure a number of other parameters such as leakage, equivalent series resistance (ESR), and inductance.
Leakage is a special case in capacitors, as the leakage is necessarily across the capacitor plates, that is, in series. An LCR meter can also be used to measure the inductance variation with respect to the rotor position in permanent magnet machines.
Measuring ESR can be done by applying an alternating voltage at a frequency at which the capacitor's reactance is negligible, in a voltage divider configuration. It is easy to check ESR well enough for troubleshooting by using an improvised ESR meter comprising a simple square-wave generator and oscilloscope, or a sinewave generator of a few tens of kilohertz and an AC voltmeter, using a known ...
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Failed aluminium electrolytic capacitors with open vents in the top of the can, and visible dried electrolyte residue (reddish-brown color) The capacitor plague was a problem related to a higher-than-expected failure rate of non-solid aluminium electrolytic capacitors between 1999 and 2007, especially those from some Taiwanese manufacturers, [1] [2] due to faulty electrolyte composition that ...
The leak is releasing up to 110,000 pounds of gas per hour. An underground well-casing might have failed, pushing the pressurized gas to the surface. Severe natural gas leak in Los Angeles County ...
In a tentative settlement, the Los Angeles Department of Water and Power has agreed to repay customers who were charged too much for sewer service from May 2016 to June 2022. A class-action ...
In electronics, leakage is the gradual transfer of electrical energy across a boundary normally viewed as insulating, such as the spontaneous discharge of a charged capacitor, magnetic coupling of a transformer with other components, or flow of current across a transistor in the "off" state or a reverse-polarized diode.