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How to distinguish the positive and negative electrodes of electrolytic capacitors|Focus on middle and high-end brand capacitor manufacturers

by:Shenmao     2021-06-05
There are many ways to determine the positive and negative poles of an electrolytic capacitor. The simple one is to look directly at the hose of the electrolytic capacitor. The negative sign is printed on one end of the hose. The positive pole at the other end is not indicated. At the electrolytic capacitor pin, one end with a grid represents the negative electrode, and the other end represents the positive electrode. If the electrolytic capacitor in your hand does not have a hose and you cannot see an obvious vote, you can only measure the positive and negative electrodes of the electrolytic capacitor through the instrument. We need a desktop power supply, reduce the voltage, connect your electrolytic capacitor to the output end of the power supply, and then turn the capacitor upside down, and observe the changes in the ammeter. When the current is large, it is proved that the positive and negative poles of the capacitor are just right. Contrary to the positive and negative power supply, this will not damage the capacitor. If there is no such power supply, it is okay to find a low voltage. Electrolytic capacitors will generate heat if they are connected reversely. Of course, if the voltage is too low, there will be no response. This method will damage the capacitors.
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