327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
365 | DF | GATING (I.E., SWITCHING INPUT TO OUTPUT) {12} |
366 | DF | .~ Superconductive (e.g., cryogenic, etc.) device {5} |
369 | DF | .~.~ External control (e.g., piezoelectric, light, etc.) {2} |
370 | .~.~.~ Magnetic field control |