Filter for Impulse Noise

Marc Sugrue

Joined Jan 19, 2018
213
Hi. How can I filter out these impulse noises until without disturbing the pulse communication signal?
View attachment 230248
Data lines often use common mode chokes to supress noise. Common mode chokes contain very litte leakage inductance which provides a small amount of differential filtering when used with a very small differential capacitor and the common mode inductance has very little effect on the actual data signal. You can evaluate common mode effectiveness by winding the data lines around a ferrite.
 

crutschow

Joined Mar 14, 2008
27,198
One possible way to minimize impulse noise is to use a slew-rate limiting filter.
It will not affect signals below the filter slew-rate, but will suppress those faster than that.

What is the frequency of your signal?
 
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