How to measure the quality of small capacity capacitors?
1. Detect small capacitors below 10pF. Because the capacity of fixed capacitors below 10pF is too small, if you use an analog multimeter to measure, you can only qualitatively check whether there is leakage, internal short circuit or breakdown.
When measuring, you can choose a multimeter R×10k block, and use the metal measuring rods of two electric meters to connect the two pins of the capacitor at will, and the resistance value should be infinite. If the measured resistance value (the indicator swings to the right) is zero, it means that the capacitor is damaged by leakage or internal breakdown.
2. For a fixed capacitance above 0.01μF, the R×10k block of an analog multimeter can be used to directly test whether the capacitor has charging process and whether there is internal short circuit or leakage, and the capacitance of the capacitor can be estimated according to the amplitude of the pointer swing to the right.
|
