The use of feedthrough capacitors in actual engineering, the frequency of electromagnetic noise to be filtered is often as high as hundreds of MHz, or even more than 1 GHz. For such high-frequency electromagnetic noise, feedthrough capacitors must be used to effectively filter out. The reason why ordinary capacitors cannot effectively filter high frequency noise is [...]
A film capacitor is a capacitor in which a metal foil is used as an electrode, and a plastic film such as polyethylene, polypropylene, polystyrene or polycarbonate is overlapped from both ends and then wound into a cylindrical structure. The following are the precautions for using film capacitors: 1. Working voltage The choice of film capacitor [...]
Super capacitor refers to a new type of energy storage device between traditional capacitors and rechargeable batteries. It not only has the characteristics of fast charging and discharging of capacitors, but also has the energy storage characteristics of batteries. The Super capacitor classification method is: First, according to different energy storage mechanisms, supercapacitors can be divided [...]
1. The difference between DC capacitor and AC capacitor is whether the capacitor has polarity (that is, it has positive and negative poles) or no polarity. 2. DC capacitor has polarity AC capacitor has no polarity. Polarized capacitors cannot be connected to AC circuits because of their positive and negative polarities. Non-polarized capacitors can be connected [...]
As a reactive power compensation device, power capacitor is an important equipment for safe operation of power grid. However, in actual applications, due to human factors and environmental factors, the capacitor frequently fails during operation, which affects normal work. This article introduces several common Fault handling of capacitors method. Fault handling of capacitors 1. When the capacitor explodes [...]