Accession Number : AD0430068


Title :   DEVELOPMENT OF IMPROVED HALL EFFECT SENSORS.


Descriptive Note : Final rept., 1 Oct 60-30 Nov 63,


Corporate Author : IIT RESEARCH INST CHICAGO ILL


Personal Author(s) : Greenstein,Larry J ; Epstein,M


Report Date : Dec 1963


Pagination or Media Count : 165


Abstract : The results of various studies performed on the program were applied to the development of highly sensitive Hall effect probes, and to the incorporation of these probes in the design of a portable, low frequency, magnetic field spectrum analyzer. Several of the subtasks performed on the program resulted in the enhanced capability of magnetic field instrumentation utilizing Hall effect probes. Among the results obtained are (a) the development of a simple technique for achieving predetection magnetic field filtering; (b) the development methods for suppressing carrier frequency components at the outputs of ac-biased Hall sensors; and (c) the optimization of Hall output transformer circuits for dc-biased magnetometers. These results have been utilized in the design of the magnetic field spectrum analyzer, as well as in the development of a three-axis magnetometer. In addition, an investigation has been conducted concerning the possible utilization of magnetoresistive effects in semiconductors, with particular applications to magnetic field detection and true rms metering. The results obtained from the various program subtasks are summarized in this report. (Author)


Descriptors :   HALL EFFECT , MAGNETOMETERS , GAIN , SENSITIVITY , MAGNETIC FIELDS , DETECTION , ELECTROMAGNETIC PROBES , WEIGHT , VOLUME , BATTERY COMPONENTS , INDIUM ALLOYS , ANTIMONY ALLOYS , FERRITES , MANPORTABLE EQUIPMENT


Distribution Statement : APPROVED FOR PUBLIC RELEASE