Semiautomatic Hall Effect Measurements System

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Abstract
A system simplifying Hall effect measurements is described. With this system the operator effort is reduced from the usual time consuming sequence of control and measurement steps to simply recording the data values. A single digital voltmeter is used to display all the values of currents and voltages required for these measurements and also the temperature of the Hall sample. The proper sequence of measurements, including magnetic field control, is achieved by using a programming switch driven by a stepping motor energized by timers. An original design of a constant current source is included. The output from the digital voltmeter could be connected to a digital punch or automatic data acquisition system providing full automation of measurements.

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