It indicates that when the input voltage is constant, DC regulated power supply The ability to restrain the fluctuation of output voltage caused by the change of load current (output current). Under the condition of specified load current change, the current regulation rate of DC regulated power supply is usually expressed as the percentage of the change value of output voltage under unit output voltage. For example, if the input voltage is Ui, when the output current reaches the specified value I, the output voltage is U, when the regulated load (i.e. current change) changes between the specified ranges, measure the output voltages under these two conditions, and record them as U1 and U2 respectively, then the current regulation rate Si=(U2-U1)/U * 100%
