Precise electric measurements with temperature using 10-bit embedded system: Application on photovoltaic junctions

In this paper, an electronic temperature control system is presented. This contribution aims to provide a not expensive prototype, fast and accurate, which can be used by research laboratories to control the temperature for electrical measurements. This device is based on the implementation of the PID algorithm in an embedded system at 10-bit Analog/Digital Converter (ADC). The electronic schematics and results of this controller are presented and compared with those with an old 8-bits ADC controller and with a standard laboratory regulator. Initial tests are performed on the temperature control of a photovoltaic junction to measure its intrinsic electrical parameters. The obtained results show the range and levels of the advantages of this device.