Filter capacitor

Filter capacitors are any capacitors used for filtering. Filter capacitors are common in electrical and electronic work, and cover a number of applications, such as:

    * Glitch removal on dc power rails
    * Radio frequency interference (RFI) removal for signal or power lines entering or leaving equipment
    * Capacitors used after the reservoir capacitor to further smooth dc power supplies
    * capacitors used in audio, IF or RF frequency filters (eg low pass, high pass, notch, etc)
    * arc suppression

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