Capacitor-input filter

（重定向自Pi filter）

The capacitor-input filter, also called the pi filter due to its shape that looks like the Greek letter π, is a type of electronic filter. Filter circuits are used to remove unwanted or undesired frequencies from a signal.

A typical capacitor input filter consists of a filter or reservoir capacitor C₁, connected across the rectifier output, an inductor L, in series and another filter or smoothing capacitor, C₂, connected across the load, R_L. A filter of this sort is designed for use at a particular frequency, generally fixed by the AC line frequency and rectifier configuration. When used in this service, filter performance is often characterized by its regulation and ripple.

单词	Pi filter
释义	Pi filter 英语百科 Capacitor-input filter （重定向自Pi filter） The capacitor-input filter, also called the pi filter due to its shape that looks like the Greek letter π, is a type of electronic filter. Filter circuits are used to remove unwanted or undesired frequencies from a signal. A typical capacitor input filter consists of a filter or reservoir capacitor C₁, connected across the rectifier output, an inductor L, in series and another filter or smoothing capacitor, C₂, connected across the load, R_L. A filter of this sort is designed for use at a particular frequency, generally fixed by the AC line frequency and rectifier configuration. When used in this service, filter performance is often characterized by its regulation and ripple.
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