323 / | HD | ELECTRICITY: POWER SUPPLY OR REGULATION SYSTEMS |
|
234 | | OUTPUT LEVEL RESPONSIVE {6} |
235 | DF | .~> Zero switching {1} |
237 | DF | .~> Phase controlled switching using electronic tube or a three or more terminal semiconductive device {8} |
247 | DF | .~> Using a transformer or inductor as the final control device {5} |
265 | DF | .~> Using a three or more terminal semiconductive device as the final control device {5} |
291 | DF | .~> Using an electronic tube as the final control device {1} |
293 | DF | .~> Using an impedance as the final control device {5} |