| 327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
| 365 | DF | GATING (I.E., SWITCHING INPUT TO OUTPUT) {12} |
| 419 | DF | .~ Utilizing three or more electrode solid-state device {7} |
| 478 | DF | .~.~ Bipolar transistor {2} |
| 482 | | .~.~.~ Plural {6} |
| 483 | DF | .~.~.~.~> Darlington connection |
| 484 | DF | .~.~.~.~> Opposite conductively (i.e., complementary) {2} |
| 487 | DF | .~.~.~.~> Control circuit in cascade |
| 488 | DF | .~.~.~.~> Control circuit in totem pole |
| 489 | DF | .~.~.~.~> Control circuit with common emitter {2} |
| 492 | DF | .~.~.~.~> Control circuit with common collector |