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Topic:Kt Kingtronics Tells You How to Use a Multimeter to Detect Electrolytic Capacitors
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A. Because the capacity of electrolytic capacitors is much larger than that of general fixed capacitors, the appropriate range should be selected for different capacities when measuring. In general, the capacitance between 1 ~ 47μF can be measured by R × 1k, and larger than 47μF can be measured by R × 100.A、因為電解電容的容量較一般固定電容大得多，所以，測量時，應針對不同容量選用合適的量程。一般情況下，1～47μF間的電容，可用R×1k擋測量，大於47μF的電容可用R×100擋測量。B. Connect the red meter to the negative pole and the black meter to the positive pole. At the moment of contacting, the pointer deflects to the right largely (for the same resistance, the larger the capacity, the larger the swing), and then gradually turn left until it stops at a certain point, which is the forward leakage resistance that is slightly larger than the reverse leakage resistance. The leakage resistance should generally be above hundreds kΩ, otherwise, it will not work properly. In the test, if there is no charging phenomenon in the f
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