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Download docs - Multimeters (digital and analog), test equipment, laboratory equipment, measurement equipment - Fluke, Hameg - Service manuals, schematic diagrams and repair information

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Descr:ESR meter
Group:Electronics > Measuring equipment > Multimeters >
Uploaded:2006-12-26 14:51:53
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esrmeter.pdfTEST&MEASUREMENT Capacitor ESR Tester the good, the bad and the leaky... Design by Flemming Jensen How about an in-circuit capacitor tester to take the strain out of tracking down faulty capacitors? No need to solder out any capacitor, simply check it in-circuit, from thousands of microFarads down to a hundred nanoFarads. In most cases, parallel coils or low value resistors are no problem. Even shorted caps may be revealed in-circuit and polarity is irrelevant for the tester. High ESR? Replace! The most significant property of a capacitor is its capacitance but besides that there's another important factor, namely the so called ESR, or Equivalent Series Resistance. An ideal capacitor is a purely reactive component with a 90-degree phase angle between current and voltage. In the real world, however, a capacitor needs to be modelled as an ideal capacitor in series with a resistor representing the losses introduced by the component. The equivalent circuit is shown in Figure 1. Sure, cap

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