On Sat, Oct 4, 2008 at 11:34 AM, Jesse Lackey <jsl-ml@celestialaudio.com> wrote:
> Ok, all this leads up to the question: how do I measure current through
> an inductor as it is operating under normal loads in such designs?  If I
> put a 0.1R resistor in series, I can get some kind of measurement (with
> a scope, 2 channel, in difference mode), but for some inductors adding
> 0.1R to its resistance changes the overall operation considerably.

Typically we use a current probe and the associated amplifier and
a oscilloscope. Tektronix is popular.
http://www.tek.com/products/accessories/oscilloscope_probes/current.html

Xiaofan
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