Abstract :
Principles of design and the experimental development of a 10-kW homopolar generator with mercury current-collector rings are described. The machine provides pure direct current ranging from 10 to 16 kA at 1.0¿0.625 volt with an estimated efficiency of 91¿88% respectively. It has a cylindrical copper rotor and a coaxial compensating conductor of magnetic material. The potentiality of this class of machine in much larger sizes is indicated.