Andrew;

If you are getting into this kind of current and complexity, why not use a hall
effect transducer?  The ones from Energy Science Corp are good for 0-100kHz.  That
one is the CS50, for about $25.  And that is not the smallest one they make.  By
the time you add up the hastle of machining and hardware and connection points for
the shunt, you are better off passing a wire through the hall sensor and being
done with it.  I used it on a 3PH brushless controller and it works fine.

Chris Eddy

Andrew Kunz wrote:

> Understood.  Our 100A shunts weigh half a pound.  I need something LIGHT!
>