EXPERIMENTAL INSTALLATION FOR THE STUDY OF ELECTROPHYSICAL CHARACTERISTICS OF BULK MATERIALS

Аннотация

The paper contains an experimental setup for studying the electrophysical properties (EFS) of bulk materials, which allows you to vary the basic parameters of the sample under study, conduct experimental studies with minimal time and obtain reproducible results in a wide frequency range. A unit for operational control of humidity and temperature of bulk grain materials has been developed for a harmonic signal, in which the lowest dispersion is possessed by a shaper whose sensor is connected to an external circuit through a capacitor whose capacity is less than the capacity of the sensor. At the same time, continuous voltage formers provide the best characteristics in conditions of constant external current, and discrete signal formers provide the smallest dispersion when charging the sensor capacity with direct current, and when discharging - through an external resistance, the value of which is less than the resistance of the sensor.