Microcontroller Efficiently Converts Sensor Voltage to Current (.PDF Download)

When taking measurements from analog sensors located at long distances, voltage drops and noise can affect precision of the readings. Therefore, a voltage-to-current (V/I) module is needed to transmit a current in order to obtain accurate readings. The reason is well-known: According to Kirchhoff’s current law (KCL), the sum of currents entering a node must be equal to the current leaving that node; thus, the sensor’s cable length is irrelevant when transmitting current and

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