Just today saw an ad for a new chip from National that will do this.  It
has a built-in 4 milliohm sense resistor and outputs a PWM proportional
to the current.  High side and low side versions available.  Check their
web site!

Harold


On Mon, 15 Mar 1999 08:34:57 -0500 Jim Dolson <jdolson@ISERV.NET> writes:
>Is there an easy way to measure currents in the range of 1A-7A.  The
>circuit in question is for part of a constant-current battery
>charger.
>Accuracy and precision isn't too important - measurements to 1/10 of
>an
>amp are sufficient.
>
>Thanks,
>Jim
>

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