
A simple low-pass filter may be constructed from one resistor (R) and
one capacitor (C) (Figure 5-3). The cut-off frequency is determined
according to the formula:
Fc =
1 Where π= 3.14...
2 π R C R = ohms
C = farads
and
R = 1
Fc = cut-off frequency in cycles/second.
2π C Fc
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