Microcontroller based device for power supply control in EMC practical classes

This paper presents a device controlled by a microcontroller that couples the supply voltage to a consumer at a time which can be scheduled, with a certain instantaneous value. The repeatability of measurements for perturbations generated by turning on equipments which depend on the moment of voltage coupling (for example, at the alternance maximum) is thus ensured. For the design of the device two coupling-decoupling elements have been considered: the triac and the relay. The proposed device contains a Web link to display data regarding the coupling and decoupling state and for remote control. This device can be used both with classical methods of education and with e-Learning.