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ContinuousWave Whaler Moderated Discussion Areas ContinuousWave: Small Boat Electrical Sensing DC Current Flow
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Author | Topic: Sensing DC Current Flow |
jimh |
posted 05-02-2010 09:44 AM ET (US)
Please suggest a very low cost way to sense the flow of 12-volt DC current which does not involve monitoring the voltage drop across a resistor in series with the current flow. I suspect the solution will involve a Hall-Effect sensor. I would like the solution to be a single package device, such as an integrated circuit. I would like the device to cost in the range of $5 to $10 per circuit. |
davej14 |
posted 05-02-2010 01:30 PM ET (US)
Jimh, What accuracy are you looking for? Can the current carrying wire be put through the device? Are you able to power the current measuring device? Can you use a component with PC pins? What is the current range you are trying to measure? For a device that can be placed in the current path: http://www.lemusa.com/hq/en/component/option,com_catalog/ task,displaymodel/id,90.E5.15.000.0/ For a device you can pass a wire through: If the wire needs to pass through with a connector attached: http://web4.lem.com/hq/en/component/option,com_catalog/ task,displaymodel/id,90.13.25.000.0/ The output of these devices is a voltage that is proportional to the current flow. They will measure DC and AC RMS currents. E.mail me offline if you want a sample. Something you may want at look at for your UPS battery monitoring system: |
jimh |
posted 05-02-2010 02:22 PM ET (US)
Dave--Thanks for the pointer to the information on the LEM product. |
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