NTC-22.01.25 “Investigation of semi-conductive materials”

At the panel unit are placed:

• solenoid,
• digital indicators of measured current via sample from semiconducting material, magnetic field induction in the gap of the solenoid magnetic circuit, sample temperature and induced Hall e.m.f.,
• regulators and switches of current polarity through the sample and magnetic field induction,
• heater switch,
• temperature regulator.

On the rear wall of the control unit there is a power cord, a fuse, a USB socket for connecting the measurement system to a PC.

A sample board is placed in the solenoid gap, where are placed a semiconductor sample, a heater, a temperature sensor, and a magnetic field induction sensor (normalized analog Hall sensor with temperature compensation).

The magnetic field induction, the current in the sample and the temperature of the sample are stabilized at a given level. For induction of a magnetic field and current through the sample, it is possible to quickly change direction while maintaining the modulus.

The training laboratory equipment is accompanied with:

• a set of teaching materials and technical documentation intended for the teaching staff;
• software for visual displaying the measured results of the parameters under study on the PC screen in real time and saving the measurement results for their further analysis.