Relationship between time constant and cutoff frequency of low-pass filter

The following formula expresses the relationship between time constant and cutoff frequency of low-pass filter.


The above formula implies the following results.

 

Time constant Cutoff frequency

1.6 ms

100 Hz

3.2 ms

50 Hz

6.4 ms

25 Hz

16 ms

10 Hz

32 ms

5 Hz

64 ms

2.6 Hz

160 ms

1 Hz

 

Revised:2014/04/14


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