Main Page | See live article | Alphabetical index An RC network is an electrical network that is constructed using a resistor and capacitor in parallel, and acts as an effective high-pass filter. Its cutoff frequency is calculated using the following equation: Where: &pi is about 3.1415926 C is the capacitor value R is the source impedance See also: Electrical network, List of electronics topics This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.