| 327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
| 365 | DF | GATING (I.E., SWITCHING INPUT TO OUTPUT) {12} |
| 403 | ![]() | .~ Parallel controlled paths {3} |
| 404 | DF | .~.~> Field-effect transistor |
| 405 | DF | .~.~> Bipolar transistor |
| 406 | DF | .~.~> Electron tube |