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Explore Stack InternalAs well as simple unwanted inductance there can be eddy current effects that affect precision measurements of AC current. This is a major issue in some kinds of equipment (eg. medical).
See, for example, this paper "AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body.
I would definitely not use random resistors from unreliable sources as AC current shunts, particularly if I didn't have the time and/or equipment to properly characterize them.
As well as simple unwanted inductance there can be eddy current effects that affect precision measurements of AC current. This is a major issue in some kinds of equipment (eg. medical).
See, for example, this paper "AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body
I would definitely not use random resistors from unreliable sources as current shunts, particularly if I didn't have the time and/or equipment to properly characterize them.
As well as simple unwanted inductance there can be eddy current effects that affect precision measurements of AC current. This is a major issue in some kinds of equipment (eg. medical).
See, for example, this paper "AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body.
I would definitely not use random resistors from unreliable sources as AC current shunts, particularly if I didn't have the time and/or equipment to properly characterize them.
As well as simple unwanted inductance there can be eddy current effects that affect precision measurements of AC current. This is a major issue in some kinds of equipment (eg. medical).
See, for example, this paper "AC characteristics of low-ohmic foil shunts influenced by eddy currents in the mounting body
I would definitely not use random resistors from unreliable sources as current shunts, particularly if I didn't have the time and/or equipment to properly characterize them.
