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Forum Post: CFA, CFB size

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Hi,

I read the below in the data sheet:

"Start with a large filter capacitor. For a ferrite core coil, 10nF is usually large enough. For an air coil or PCB
coil, 100pF is usually large enough".

However on the LDC1000 dev board I see it is 20pF? I will be testing air coils with a diameter of ~75mm. Do you suggest I modify this CFA, CFB cap?

Jeff


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