Battery Current Monitor

BriceH

If anyone is interested in a battery charge/dis-charge monitor, then take a look at this· Hall Sensor.·

http://www.melexis.com/prodfiles/0004758_MLX90215_Rev007.pdf

Get an iron powder toroid, about 1 inch diamater, cut a 1/16th groove to fit the sensor into,·wrap a few windings around the toroid and input that into a ADC.·

Measuring current with OP-AMPS thru a resistor introduces ground reference problemes.

This part delivers a voltage of 2.5 volts at zero current allowing·you monitor + and - currents.

Of course you'll have to do the math inside the BS.·

This part is available from Digikey: MLX90215 Hall Effect sonsor.

Brice

sam_sam_sam

Thanks for sharing the Info that will·help a lot





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··Thanks for any··that you may have and all of your time finding them

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Sam

BriceH

Another note about this chip... looking at the pdf file for this chip that it looks that YOU have to program it. When I bought mine from Digikey, it was allready programmed for 0-5 v output, 2.5v with no current flow. Just wanted to clear that up... Brice.