Dynamic input variation

In power circuits and similar applications, this refers to the variation in output voltage when the input voltage is rapidly changed within a specified range under rated conditions such as load current. It is one of the indicators showing the stability of a power circuit against input fluctuation. The smaller the dynamic input variation, the higher the stability against sudden input voltage fluctuations. It is useful, for example, for estimating the stability of the output voltage when the commercial power supply used as input fluctuates rapidly due to the effects of other loads.