at higher frequencies and require that they be measured at a higher
frequency of 1 KHz. Generally, inductors below 2mH should be
measured at 1 kHz and inductors above 200H should be measured at
120Hz.
It is best to check with the component manufacturers’ data sheet to
determine the best test frequency for the device.
Charged Capacitors
Always discharge any capacitor prior to making a
measurement since a charged capacitor may seriously damage
the meter.
Effect Of High D on Accuracy
A low D (Dissipation Factor) reading is desirable. Electrolytic
capacitors inherently have a higher dissipation factor due to their
normally high internal leakage characteristics. If the D (Dissipation
Factor) is excessive, the capacitance measurement accuracy may be
degraded.
It is best to check with the component manufacturers’ data sheet to
determine the desirable D value of a good component.
Measuring Capacitance of Cables, Switches or Other Parts
Measuring the capacitance of coaxial cables is very useful in
determining the actual length of the cable. Most manufacturer
specifications list the amount of capacitance per foot of cable and
therefore the length of the cable can be determined by measuring the
capacitance of that cable.
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