Undervoltage detector circuit for avionics using single supply voltage with MOS-FET

Under-voltage detector (UVD) is consisted of the comparator and voltage divider, which is used for the reference and comparison with that reference in avionics. It is best for this UVD to use only one supply, but general UVD in commercial and avionics application has to use different supply for reference with comparator supply. This paper propose the advance UVD circuit, which use the threshold characteristics of MOS-FET, and makes it possible for UVD circuit to use only one supply for target and reference.