| 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} |
| 504 | DF | .~.~ PN junction diode {1} |
| 505 | ![]() | .~.~.~ Inverse parallel connection |