RC Low Pass Filter

Since capacitive reactance decreases with frequency, the RC circuit shown discriminates against high frequencies. The circuit is an AC voltage divider with an output which falls off at high frequencies at the rate of 6 dB per octave.


Calculation

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Capacitance concepts

Inductance concepts
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RC Low Pass Filter Details


RC low pass filterCalculation
Filter Circuits
Index

Capacitance concepts

Inductance concepts
  HyperPhysics***** Electricity and Magnetism Go Back





RC Low Pass Filter Calculation

Since capacitive reactance decreases with frequency, the RC circuit shown discriminates against high frequencies. The circuit is an AC voltage divider with an output which falls off at high frequencies at the rate of 6 dB per octave.


Low pass filter

More detail
Filter Circuits
Index

Capacitance concepts

Inductance concepts
  HyperPhysics***** Electricity and Magnetism Go Back