Speaker Asylum

Public School math

68.103.13.92


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47 is 3 less than 50 & 56 is 6 more than 50. 3/50=0.06 or 3 is 6% of 50. Typically such crossover parts themselves have +,-10% deviation per value-as-marked tolerances, so replacing a 50-ohm part with a 47-ohm part is not only OK, but within part specification. If only a 56-ohm part is available (or readily so), even that will be fine but 47 is the better choice of those two.

Edits: 03/05/12

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