Methods and systems for accuracy improvement in current comparators

A method comprising:

• providing a microcontroller controlling operation of a current comparator bridge employing a current comparator;
• providing the current comparator which comprises a predetermined portion of the current comparator bridge generating a bi-polar current coupled to a first end of a first winding of the current comparator;
• providing a first load resistor;
• providing a switch which in a first configuration selectively couples the first winding of the current comparator to ground via the first load resistor and in a second configuration couples the first winding to either a reference resistor or a test resistor;
• establishing with the microcontroller whether the switch should be established in the first configuration to perform a degaussing operation or the second configuration to perform a measurement;
• and
• generating when in the first configuration a first predetermined current profile to initially saturate a magnetic core of the current comparator and subsequently iteratively cycle the current through negative and positive cycles to null the magnetic field within the magnetic core.