Function of cbb capacitor

Function 1 of cbb capacitor: restrain electromagnetic interference of power supply. Function 2: reduce impedance. CBB capacitor is also called polypropylene capacitor. Capacitance 10p-10 μ， Rated voltage: 63-2000V. It can replace most polyphenyl or mica capacitors, and is used for circuits with higher requirements. Its performance is similar to that of polystyrene, but its volume is small and its stability is slightly poor.

Function 1: restrain electromagnetic interference of power supply.

Application in power electronic circuits. Thin film capacitors are used here, mainly for buffering and clamping of power current, resonance bypass, suppression of electromagnetic interference of power supply, etc.

Function 2: reduce impedance.

When the film capacitor is used as a bypass, it is mainly used to reduce the impedance of the DC bus and absorb the ripple current from the load, so as to effectively suppress the fluctuation of the DC bus voltage due to sudden load changes. When the device is used in a resonant converter, it can realize resonance together with the inductor.

Core advantages of capacitors:

Its main equivalence is as follows: non polarity, high insulation impedance, excellent frequency characteristics (wide frequency response), and small dielectric loss. Based on the above advantages, film capacitors are widely used in analog circuits. Especially in the signal overlapping part, the frequency characteristic must be good

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