On Tuesday 14 November 2006 11:10, William Chops Westfield wrote:
> On Nov 14, 2006, at 3:08 AM, Bob Axtell wrote:
> > the client only wants to detect a FLOW of current, so that anything
> > over 1 A would be acceptable.
>
> In that case, can't you just use a small coil and a (really cheap)
> (digital) hall effect sensor?
>
> BillW

Straying off the OP's requirement a bit... In general, using hall effect 
sensors in this manner, wouldn't this require calibration of each unit?

-Neil.

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