Two categories of film capacitors
Release time:
2019-05-23
Thin film capacitor is a kind of electronic component, in many household appliances are used, the application range is very wide! Thin film capacitors have gradually replaced aluminum electrolytic capacitors. Film capacitors can be divided into what two categories, what is its role, together with Xiaobian to understand.
Thin film capacitor is a kind of electronic component, in many household appliances are used, the application range is very wide! Thin film capacitors have gradually replaced aluminum electrolytic capacitors. Film capacitors can be divided into what two categories, what is its role, together with Xiaobian to understand.
Thin film capacitor is a kind of capacitor made of metal foil as electrode, which is overlapped with plastic film such as polyethyl ester, polypropylene, polystyrene or polycarbonate from two ends and wound into a cylinder. The working principle of thin-film capacitor is the same as that of general capacitor, which stores electric energy by storing charge on the electrode and is usually used together with inductors to form LC oscillation circuit. The working principle of capacitor is that charge will move under force in the electric field. When there is a medium between conductors, charge movement will be prevented and charge will accumulate on the conductor, resulting in charge accumulation and storage.
Thin film capacitors can be divided into DC thin film capacitors and AC thin film capacitors: DC thin film capacitors are working in the circuit of DC power supply, can be divided into general class, inhibit the electromagnetic interference of the power supply, pulse class and precision class four categories; Ac film capacitor refers to the film capacitor working in the circuit of AC power supply, according to the function of motor start-up operation, power factor compensation, etc.
Thin film capacitors are widely used because of their high insulation impedance, wide frequency response and non-polarity, so thin film capacitors are often used in integrated circuit boards, analog circuits and so on. In particular, the performance of signal interconnection is very superior. Compared with other media, the dielectric loss of thin film capacitor is small and the frequency response is broad, which can ensure that the signal will not change when it is transmitted. In order to meet people's requirements for audio quality and improve sound quality, the film capacitors applied now are becoming more and more advanced. Price is not the most important factor to consider, so the frequency and quantity of PP capacitors and PS capacitors used in audio equipment are also becoming higher and higher.
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Guocan Electronics is the production and development, design, sales of film capacitors, DC film capacitors, power electronic capacitors, AC motor capacitors, axial capacitors, resistance capacitors, electromagnetic interference suppression power supply, chip capacitors,
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