| 327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
| 1 | DF | SPECIFIC SIGNAL DISCRIMINATING (E.G., COMPARING, SELECTING, ETC.) WITHOUT SUBSEQUENT CONTROL {11} |
| 50 | | .~ By amplitude {9} |
| 51 | DF | .~.~> With sensing amplifier {2} |
| 58 | DF | .~.~> Maximum or minimum amplitude {4} |
| 63 | DF | .~.~> Comparison between plural varying inputs {5} |
| 72 | DF | .~.~> Input signal compared to reference derived therefrom {1} |
| 74 | DF | .~.~> Input signal compared to plural fixed references {2} |
| 77 | DF | .~.~> Input signal compared to single fixed reference {10} |
| 90 | DF | .~.~> Comparison between two characteristics of an input signal |
| 91 | DF | .~.~> Including details of sampling or holding {3} |
| 97 | DF | .~.~> With logic or bistable circuit |