Abstract: A regulated power supply system, for a sensitive computer environment, having a plurality of switching regulators to provide highly regulated D.C. voltage to individual loads connected to each of the regulators. A centralized oscillator is used to supply the clock signal to the control circuit of each of the different switching regulators. Thus, any radio frequency interference problems will be associated with only one fundamental frequency and its related harmonics. A modified ring counter is used to stagger the turn-on point of each individual regulator so that the power demands on the source of power are not suddenly severe and instantaneous, which might generate transients disruptive of computer operations. Further, the modified ring counter is used to synchronize the frequency of each regulator to a common clock, in addition to its controlling the phase shifting of each regulator for a staggered turn-on.