363 / | HD | ELECTRIC POWER CONVERSION SYSTEMS |
157 | DF | FREQUENCY CONVERSION (f1-f2) WITHOUT INTERMEDIATE CONVERSION TO D.C. {7} |
170 | .~ By induction-type converter {3} | |
171 | DF | .~.~> Transformer {1} |
173 | DF | .~.~> LC circuit |
174 | DF | .~.~> Dynamoelectric machine {2} |