| 327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
| 365 | DF | GATING (I.E., SWITCHING INPUT TO OUTPUT) {12} |
| 493 | DF | .~ Utilizing two electrode solid-state device {5} |
| 494 | DF | .~.~ Bridge circuit {3} |
| 497 | ![]() | .~.~.~ Active element in diagonal arm |