Views: 3 Author: Site Editor Publish Time: 2025-09-25 Origin: Site
1) First look at the appearance. If there is a problem with the appearance, the film capacitor is likely to have a problem.
2) Use the resistance range of a multimeter to test the two pins of the film electrode, which should show a very high resistance. If you have a capacitance meter, measure the capacitance to see if it matches the mark on the outer shell.
3) Test performance at room temperature, including capacity, loss, insulation resistance, withstand voltage, ESR, etc. Focus on testing the aspects of the capacitor performance that are particularly needed.
4) Conduct simulated life tests. If the performance is good under normal temperature and normal conditions, the next step is to see if the lifespan can be sustained.
5) Choose a reputable capacitor manufacturer.
6) If your usage requirements are not high, you can buy some universal ones from the market, do a copy machine test yourself, and if it passes, you can use it with confidence.
7) Film capacitors use metal foil as electrodes, overlapping it with plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate from both ends and then winding it into a cylindrical structure.Depending on the type of plastic film, they are known as polyethylene capacitors, polypropylene capacitors, polystyrene capacitors, and polycarbonate capacitors. Film capacitors have seen increasing usage in recent years, so it's important to understand their inspection and handling.
