Filter capacitor: Difference between revisions

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Filter capacitors are any capacitors used for filtering. This covers 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)

Filter capacitors are sometimes confused with reservoir capacitors, but the tasks the two perform are different.

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 {{Mergeto|Reservoir capacitor|date=March 2007}}
+'''Filter capacitors''' are any [[capacitor]]s used for filtering. This covers a number of applications, such as:
-'''Filter capacitors''' are [[capacitor]]s used to [[smooth]] the [[ripple]] voltage present in a pulsating [[Direct current|DC]] voltage output of a [[power supply]] rectifier. [[Rectifier]]s convert an [[Alternating current|AC]] supply into a pulsating DC supply. Most modern electronic devices require a steady DC supply.
+* 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 the [[reservoir capacitor]] to further [[smooth]] [[power supply|dc power supplies]]
+* capacitors used in audio, IF or RF [[electronic filter|frequency filters]] (eg low pass, high pass, notch, etc)
+Filter capacitors are sometimes confused with reservoir capacitors, but the tasks the two perform are different.
-Sometimes the term merely refers to a capacitor that is part of an electrical or [[electronic filter]] circuit.
 [[Category:Capacitors]]