ACS712 Current Sensor Module +-- 5A
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ACS712 Current Sensor Module +-- 5A

$2.75
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This current sensor board is based on the Allegro ACS712ELCTR-05A bi-directional hall-effect current sensor chip that detects positive and negative flowing currents in the range of minus 5 Amps to positive 5 Amps. The board operates at 5V DC and the current flow through the sensor is converted to an output voltage starting at 1/2Vcc (or 2.5V) for no current flow and moves up 185mV per amp for positive current or down -185mV per amp for negative current. For Example: The output voltage at +2 amps would be (2.5V + (0.185 * 2)) = 2.870 V The output voltage at -5 amps would be (2.5V - (0.185 * 5)) = 1.575 V Specifications VCC: 5V DC Nominal Measurement Range: -5 to +5 A Voltage at 0A: VCC/2 (Nominally 2.5V DC) Scale Factor: 185mV per A Dimensions: Length: 31.73 mm (1.24") Width: 13.25 mm (0.52") Height: 14 mm (0.55") Hook Up Diagram (Click on image to view full size) Resources ACS712 Datasheet (PDF file) ACS712 Example Arduino Sketch (Zip file)

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