>A current transformer is NOT the way to go.  The OP wants
>to measure DC current from the output.  A current
>transformer won't tell him anything.

Well it will if he gets one of the ones that incorporate hall effect sensors
such as those from LEM. However I am not sure what the temperature
co-efficient is, and as others have said they are really designed for
currents in the amp range, rather than tiny currents.

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