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Filter capacitors are capacitors used for filtering of undesirable frequencies. They are common in electrical and electronic equipment, and cover a number of applications, such as: * Glitch removal on Direct current (DC) power rails * Radio frequency interference (RFI) removal for signal or power lines entering or leaving equipment * Capacitors used after a voltage regulator to further smooth dc power supplies * Capacitors used in audio, intermediate frequency (IF) or radio frequency (RF) frequency filters (e.g. low pass, high pass, notch, etc.) * Arc suppression, such as across the contact breaker or 'points' in a spark-ignition engine Filter capacitors are not the same as reservoir capacitors, the tasks the two perform are different, albeit related. ==Types== Many filtering tasks have specific types of capacitor that are required or typically used for the task. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「filter capacitor」の詳細全文を読む スポンサード リンク
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