Filter for Impulse Noise

Marc Sugrue

Joined Jan 19, 2018
Hi. How can I filter out these impulse noises until without disturbing the pulse communication signal?
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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.


Joined Mar 14, 2008
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?