06-11-2014, 10:41 AM
Abstracts: This project defines a way to detect the variations in frequency and voltage of the power supply from the feeder unit to determine the synchronization failure. Here a frequency variation detection system and a voltage variation detection system are used. The frequency variation is achieved using an external timer and detection is achieved using the internal timer of the microcontroller. Incase of the frequency limits exceeding or being too low, the lamp is accordingly switched on. The voltage variation is achieved using a VARIAC and detection is achieved using a comparator arrangement and any variation in voltage is detected by the microcontroller. Incase of any voltage variations, the lamp is switched on.