Friday, 13 January 2017

measurement - What is the effect of Saturation on a Ferrite Bead Inductor?


enter image description here


This circuit shows the "current channel" of an energy meter.


IA_IN are the two inputs for a shunt (typically 250 uOhms) while TP1 is the connection to the energy measurement IC, which uses the 3.3 V supply voltage (V3P3) as a reference.


The input uses ferrite beads as a form of filter for the incoming AC signal. I want to know what the effect of saturation will be on the ferrite bead inductors at the input.




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