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  2. Capacitance meter - Wikipedia

    en.wikipedia.org/wiki/Capacitance_meter

    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.

  3. ESR meter - Wikipedia

    en.wikipedia.org/wiki/ESR_meter

    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 ...

  4. VLF cable testing - Wikipedia

    en.wikipedia.org/wiki/VLF_cable_testing

    VLF cable testing (Very Low Frequency) is a technique for testing of medium and high voltage (MV and HV) cables. VLF systems are advantageous in that they can be manufactured to be small and lightweight; making them useful – especially for field testing where transport and space can be issues.

  5. Multimeter - Wikipedia

    en.wikipedia.org/wiki/Multimeter

    Testing often requires that the component under test be isolated from the circuit in which they are mounted, as otherwise stray or leakage current paths may distort measurements. In some cases, the voltage from the multimeter may turn active devices on, distorting a measurement, or in extreme cases even damage an element in the circuit being ...

  6. LCR meter - Wikipedia

    en.wikipedia.org/wiki/LCR_meter

    An ideal capacitor has no characteristics other than capacitance, but there are no physical ideal capacitors. All real capacitors have a little inductance, a little resistance, and some defects causing inefficiency. These can be seen as inductance or resistance in series with the ideal capacitor or in parallel with it. And so likewise with ...

  7. Megger Group Limited - Wikipedia

    en.wikipedia.org/wiki/Megger_Group_Limited

    Programma Electric AB was a Swedish electrical test and measurement equipment manufacturer founded in 1976. [38] It provided products including: circuit breaker analysers, battery load testers, primary injection testers, vacuum interrupter testers, micrometers and protective relay test instruments.

  8. These 10 bestselling mattresses are on sale for Black Friday

    www.aol.com/lifestyle/these-10-bestselling...

    We found 10 incredible mattresses on sale for Black Friday, including Nectar, Dreamcloud, Serta, Tuft & Needle, and others.

  9. Load bank - Wikipedia

    en.wikipedia.org/wiki/Load_bank

    A load bank is a piece of electrical test equipment used to simulate an electrical load, to test an electric power source without connecting it to its normal operating load. [ 1 ] [ 2 ] During testing, adjustment, calibration, or verification procedures, a load bank is connected to the output of a power source, such as an electric generator ...

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