217959 ⎘
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output; Conversion of ac power input into dc power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts wherein the parts are rotating and collectors co-operate with brushes or rollers
Diode mounting ring with contact band inserts
#2Apparatus for generating alternating current power by direct current supply brush that rotates with field pole generator, and apparatus for generating direct current power
#3Power system for fuel cell, electronic equipment and electric power feeding method