Patent ID: 8669759
Filing Date: 2014-03-11
Classification: G01R,H03K

Abstract:
1. An omnipolar magnetic switch comprising: a magnetic sensor configured to generate an electric signal from a sensed magnetic field; switching circuitry coupled to the magnetic sensor to receive and selectively invert the electric signal; first comparator coupled to the switching circuitry to receive the electric signal or an inverted electrical signal as input from the switching circuitry and to evaluate an amplitude of the input and toggle high or low when the amplitude passes above a first threshold or below a second threshold; a second comparator coupled to inputs of the first comparator to detect positive-to-negative and negative-to-positive transitions of the electric signal generated by the magnetic sensor; and polarity detection circuitry coupled to the second comparator to detect a positive-to-negative transition and coupled to the switching circuitry to instruct the switching circuitry to selectively invert the electric signal when a positive-to-negative transition is detected.