薄膜电容器被人们称之为塑料薄膜电容，主要是以塑料薄膜来作为电介质的。由于电容器的电质不同，它的种类也非常的多。如电解质电容，空气电容，纸质电容和薄膜电容等。

　　Thin film capacitor is called plastic film capacitor, which mainly uses plastic film as dielectric. Due to the different electrical quality of capacitors, there are many kinds of capacitors. Such as electrolyte capacitor, air capacitor, paper capacitor and film capacitor.

　　薄膜电容器主要是以金属箔来当电极，然后通过电能来工作的。由于它本身具有着很多优良的特性，所以是一种优良的电容器，就像理工上常见的知识特性，无极性，绝缘阻抗能力好等。所有，很多的模拟电路会选用它，且安全可靠，能减少对人们本身的危害。

　　Thin film capacitor mainly uses metal foil as electrode, and then works through electric energy. Because it has many excellent characteristics, it is an excellent capacitor, just like the common knowledge characteristics in science and engineering, such as non polarity, good insulation impedance, etc. All, a lot of analog circuits will choose it, and safe and reliable, can reduce the harm to people themselves.

　　除了用作电路，薄膜电容器的用处还是非常多的，像电子，家里的电器，电话，电气等多个行业领域都能看到它们的身影，很多人每天都接触着这些东西，而却不知道它就是薄膜电容器制成的。

　　In addition to being used as circuits, film capacitors have many uses, such as electronics, home appliances, telephone, electrical and other industries. Many people contact these things every day, but they don't know that they are made of thin film capacitors.

　　薄膜电容器的使用范围是十分广泛，例如空调，冰箱，洗衣机，风扇，电源等等。薄膜电容器也涉及了交通运输行业，我们熟悉的动车也有薄膜电容器的身影。薄膜电容器的主要应用领域有哪些？

　　Film capacitors are widely used, such as air conditioners, refrigerators, washing machines, fans, power supplies and so on. The film capacitor also involves the transportation industry, we are familiar with the EMU also has the film capacitor figure. What are the main applications of thin film capacitors?

　　1）在电力电子线路中的应用。薄膜电容器它被使用在该处，主要就是起着电力电流的一个缓冲以及箝位、谐振旁路以及抑制电源电磁的干扰等等作用。

　　Application in power electronic circuit. Thin film capacitor, which is used here, mainly serves as a buffer and clamp of power current, resonance bypass and suppression of electromagnetic interference of power supply.

　　2）当薄膜电容器用作旁路时，它主要就是起着降低直流母线的阻抗以及吸收来自负载的纹波电流，从而起到有效地抑制直流母线电压在因负载突变而出现的波动。

　　When thin film capacitor is used as bypass, it is mainly used to reduce the impedance of DC bus and absorb the ripple current from load, so as to effectively suppress the fluctuation of DC bus voltage due to load mutation.

　　3）当该装置用于谐振式变换器时，它就能够起到与电感一起实现谐振的功能。

　　When the device is used in resonant converter, it can realize resonance with inductor.

　　不不同的应用领域中，薄膜电容器发挥着不同的作用，只有了解薄膜电容器的工作原理才能在使用的时候更加的游刃有余。

　　In different application fields, thin film capacitor plays a different role. Only by understanding the working principle of thin film capacitor can we be more comfortable when using it.