(under subclass 75) Subject matter wherein the "loop path" (see (3) Note under subclass 75 for the definition of loop path) includes a nonlinear impedance circuit element, which may be resistive, capacitive, or inductive, and whose impedance is such for changes in voltage applied thereto that the relationship between the voltage across such element to the current flow through the element is nonlinear.
SEE OR SEARCH THIS CLASS, SUBCLASS:
86, for amplifiers having a variable impedance in the feedback path varied by a separate control path. See the search notes thereunder.
95, for amplifiers having a nonlinear impedance element in the cathode impedance feedback path.
143, for amplifiers having a thermally responsive impedance in the signal path.
183, for amplifiers having a D.C.. interstage coupling means including a nonlinear impedance element. See the search notes thereunder.
