| 315 / | HD | ELECTRIC LAMP AND DISCHARGE DEVICES: SYSTEMS |
| 291 | DF | CURRENT AND/OR VOLTAGE REGULATION {7} |
| 294 | ![]() | .~ Plural load device regulation {4} |
| 295 | DF | .~.~> Regulator selectively connectable to plural circuits |
| 296 | DF | .~.~> Inverse control of load devices |
| 297 | DF | .~.~> Automatic regulation |
| 298 | DF | .~.~> Mechanically connected regulators |