Complex sentence: The Principle of the DSRD operation is similar to the SRD, with one n essential difference-the forward pumping current should be pulsed, not continuous, because drift diodes function with slow carriers.
Split into simpler sentences: The Principle of the DSRD operation is similar to the SRD. However there is an essential difference-the forward pumping current should be pulsed, not continuous, because drift diodes function with slow carriers.