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Current Sensing

Current Sensing . Justin Heyer. Options . Current sensing resistor . Hall Effect based linear current sensor . Vcc +. Descriptions. Current Measuring Resistor Measure the Current through the resistor inline to the destination. Takes a direct measurement off the inline resistor.

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Current Sensing

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  1. Current Sensing Justin Heyer

  2. Options Current sensing resistor Hall Effect based linear current sensor Vcc+

  3. Descriptions Current Measuring Resistor • Measure the Current through the resistor inline to the destination. • Takes a direct measurement off the inline resistor. Hall Effect Sensor • Also measures current during the path to its destination. • Uses a pre-calibrated controller and sensor that measures magnetic field from the wire carrying the current.

  4. Pros Current measuring resistor Hall effect sensor • Easy to install inline to voltage source. • Can be very cost efficient depending on amount of current and voltage being measured. • Very accurate • Not actually connected to voltage lines therefore less risk of damage. • Good for use with data acquisition systems

  5. Cons Current measuring resistor Hall effect sensor • Can be damaged if wrong currents are applied because it is inline. • Can be less accurate. • Cost • Additional circuitry is needed as opposed to less for an inline resistor.

  6. Rubric The hall effect sensor scored higher due to safety because it is not directly connected into the power circuit and also it can be more accurate.

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