Electromagnetic noise-immunity improving of signal transducers based on Hall sensors

Abstract

The authors consider electromagnetic noise cancellation in galvano¬magnetic magnetic field measurement devices based on Hall sensors. The paper presents the advanced microprocessor signal transducer featuring high noise-immunity, provided by two-stage signal measurement at reversed directions of Hall sensor supply current. It is shown that the use of two-stage mode at high electromagnetic interference provides the improvement of signal measurement results reproducibility up to 8 times.

Keywords

• Hall sensor
• signal transducer
• noise-immunity