Using the resistance gear test, first short the two feet of the capacitor to discharge, then the red test lead is connected to the positive electrode, and the black test lead is connected to the negative electrode. 1. Estimate the size of the microwave method-level capacitor capacity: it can be determined by experience or by referring to the standard capacitor of the same capacity, according to the maximum amplitude of the pointer swing. 2. Estimate the capacitance of the picofarad level capacitor: use the R×10kΩ file, but only the capacitance above 1000pF can be measured. For 1000pF or slightly larger capacitors, as long as the needle swings slightly, it can be considered that the capacity is sufficient. 3. Measure whether the capacitor is leaking: For capacitors above 1,000 microfarads, you can use the R×10Ω gear to quickly charge it, and initially estimate the capacitance capacity, then change to the R×1kΩ gear and continue to measure for a while, when the pointer does not Should return, but should stop at or very close to ∞, otherwise there will be leakage. 4. Adjust the function switch to 20uF or 200uF, the test pens are in the middle two holes, and the test pens are used to measure the two poles of the capacitor respectively, and then the capacity will be displayed. If it is a used capacitor, be sure to discharge it before measuring.
