How to detect chip capacitance? Recently, Baidu Zhizhi, Zhihu, and other Q&A platforms have encountered many other problems with chip capacitance detection. Many people do not understand chip capacitance detection, resulting in an increased probability of errors. Today, let's give you a lesson on science popularization.
        After swinging to a certain value, it will return to the vicinity of large. The larger the value shown, the greater the capacitance leakage resistance. Generally, the normal electrolytic capacitance is above hundreds of k Ω, and other capacitors are large. If the measured capacitance makes the swing of the meter needle close to the normal capacitance (which can be compared and measured), and the leakage resistance is large, it indicates that the capacitance is good, otherwise it is abnormal.
        After measuring once, exchange the positions of the two probes for another measurement, which is convenient for comparing and judging the quality of the capacitance. For electrolytic capacitors, this can also distinguish the positive and negative electrodes: the black pen connected to the positive electrode of the capacitor and the red pen connected to the negative electrode in the two measurements where the meter needle indicated a large leakage resistance. It should be noted that some electrolytic capacitors have small reverse leakage resistance, often ranging from tens to several k Ω, but their forward leakage resistance is basically normal. Most of these capacitors are of poor quality or stored for too long, and should not be used.
        How to detect chip capacitance? Have you learned? It is recommended that you seek an agent directly authorized by the original manufacturer, such as SMD capacitors, to purchase or request samples of SMD capacitors. Not only can the quality of the sample and the product be ensured to be consistent, but also professional selection guidance from experienced technical engineers can be obtained. They will provide you with professional support in terms of technology, procurement convenience, and many other aspects.