Abstract: A common bus energization system is disclosed with first and second bus conductors across which a plurality of individual loads may be connected in parallel. Each of the loads is inductive and is capable of operating on direct current, for example, universal or shunt field DC motors, permanent magnet motors, magnetic particle clutches, eddy current clutches, relays, solenoids and the like. Voltage source means is provided to supply a resultant voltage to the first and second bus conductors. This voltage source means includes first and second sources with the first source connected to supply a large, positive voltage on the first conductor and the second source connected to supply a negative voltage on the first conductor. These two voltage sources are alternated with the first source effective a greater period of time for a net average polarity of positive on the first conductor. Each load, such as a motor, has a controllable semi-conductor connected to it to control the current through the motor.