Eczema is a common skin problem that is also sometimes called atopic dermatitis. It usually affects babies and young children, but adults can develop it, too. This inflammatory skin condition is often believed to be an allergic reaction, but the cause is unknown.
The potential of each line of a three-phase system is displaced from the other two by 120 electrical degrees. The sequence, or order, in which the potential of each line reachâ¦es its peak value is termed the 'phase sequence' of the system.
Phase Shift Keying is a modulation mode, but it is a digital modulation mode and has nothing to do with Amplitude Modulation. Single Sideband is a modulation mode commonly used with HF operation and can be essentially described as a variant of amplitude modulation that only uses half of the signal and no carrier.