323 / | HD | ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS |
212 | FOR PHASE SHIFT OR CONTROL {5} | |
213 | DF | .~> By splitting and combining |
214 | DF | .~> Using saturable inductor |
215 | DF | .~> Using transformer {1} |
217 | DF | .~> Using a three or more terminal semiconductive device |
218 | DF | .~> Using impedance {1} |