人体私拍套图hdxxxx I 人物动物互动39集免费观看 I 人妖网站 I 人妖网址 I 人妖系列 I 人妖性做爰aaaa I 人与动物av I 人与动物黄色片 I 人与动物毛片 I 日b免费视频 I 日b视频在线观看 I 日本50路肥熟bbw I 日本69少妇 I 日本69视频 I 日本69熟 I 日本91av I 日本aaaa I 日本av网站 I 日本av在线播放 I 日本a级大片 I 日本a级网站 I 日本a区 I 日本a视频 I 日本a在线 I 日本a在线观看 I 日本h片 I 日本va欧美va精品发布 I 日本va欧美va欧美va精品

Safety capacitors include two types: X capacitors and Y capacitors. X capacitors are capacitors that are connected across two power lines (L-N) and generally use metal film capacitors; Y-capacitors are capacitors that are respectively connected between two power lines and ground (L-E, N-E), usually appearing in pairs

 Firstly, we know that an electric capacity is composed of two metal electrodes sandwiched between insulating materials (dielectric). Due to differences in insulation materials, the types of capacitors formed also vary:
According to structure, it can be divided into fixed capacitors, variable capacitors, and fine tuned capacitors. According to the dielectric material, it can be divided into: gas dielectric capacitor, liquid dielectric capacitor, inorganic solid dielectric capacitor, organic solid dielectric capacitor, organic solid dielectric Electrolytic capacitor. According to polarity, it can be divided into polar capacitors and non-polar capacitors.
Capacitors have the function of isolating direct current through alternating current in circuits, and are therefore commonly used for inter stage coupling, filtering, decoupling, bypass, and signal tuning.
Precautions: Capacitors for suppressing electromagnetic interference from power sources
When using capacitors to eliminate noise in cross line power circuits, not only normal voltage but also abnormal pulse voltage (such as lightning) should be considered, which may cause the capacitor to smoke or catch fire. Therefore, the safety standards for cross line capacitors have strict regulations in different countries, so it is necessary to use certified capacitors.