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Resistance Choice based on Q, `R_2, C_1, C_2`

vCalc Reviewed
Last modified by
on
Jul 24, 2020, 6:28:07 PM
Created by
on
Nov 11, 2013, 11:41:50 PM
`R_1 = ( C_1 R_2 ) / ( C_2 Q ^2)`
`"Resistance 2"`
`"Capacitance 1"`
`"Capacitance 2"`
`"Q Value"`
Tags
Physics Electrical Engineering Electronic Verified
UUID
01d992ad-3d4e-11e3-83ad-bc764e049c3d

This equation computes the Resistance `R_1` (see diagram) of the unity gain low pass filter implementation of the Sallen-Key topology.  This electronic filter is a special case of a second-order unity gain filter version of the voltage-controlled voltage-source (VCVS) topology.

`R_1` is a function of the Resistance, `R_2`, and Capacitances (`C_1`, `C_2`) shown in the diagram.
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