(under subclass 81) Subject matter including at least one signal feedback means wherein the signal feedback at the amplifier device input means has a component in phase with the input signal at this point in the circuit, and at least one signal feedback means wherein the signal feedback at the amplifier device input means has a component opposite in phase with the input signal at the amplifier input to which such feedback is applied.
SEE OR SEARCH THIS CLASS, SUBCLASS:
89, for cathode-cathode feedback for cascaded adjacent amplifier stages.
93, for combined diverse type feedback coupling including positive feedback.
101, for positive and negative in the same path at different frequencies.
104, for positive and negative feedback generally.
