APPARATUS FOR REMOVING A LEAKAGE CURRENT FROM A HALL SENSOR TYPE SWITCH CAPABLE OF ACCURATELY DETERMINING A CURRENT AMOUNT PROVIDED TO THE HALL SENSOR TYPE SWITCH

摘要

PURPOSE: An apparatus for removing a leakage current from a hall sensor type switch is provided to prevent malfunction in a microprocessor due to a leakage current of the microprocessor by receiving a current amount flowing in the hall sensor type switch.;CONSTITUTION: A hall sensor type switch(110) operates according to power supplied from the outside. A current detection part(130) detects the supplied current. An A/D converter(150) changes an output signal from the current detection part, that is an analog signal, into a digital signal. A microprocessor(170) determines the output signal from the A/D converter and a leakage current from the hall sensor type switch based on a pre-stored critical value. The microprocessor generates a control signal for eliminating the leakage current. A leakage current removing part(190) removes the leakage current supplied to the hall sensor type switch according to the control signal of the microprocessor.;COPYRIGHT KIPO 2012