218013 ⎘
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output; Conversion of dc power input into ac power output without possibility of reversal by dynamic converters using mechanical parts to select progressively, or to vary continuously, the input potential
Mechanical device for converting direct current into alternating current
#2Voltage generation apparatus and voltage generation method
#3Apparatus for generating sine waves of electromotive force, rotary switch using the apparatus, and generators using the rotary switch