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Class Information
Number: 330/88
Name: Amplifiers > Signal feedback > Cathode impedance feedback > Cascade amplifier stages with cathode-cathode feedback
Description: Subject matter involving at least two stages of amplification wherein the output of each stage is coupled to the input of the preceding stage except the first, and wherein at least two of the stages are arranged as defined in subclass 87 with signal feedback from the cathode impedance of the latter of the cascaded stages to the cathode impedance of a preceding stage.

Sub-classes under this class:

Class Number Class Name Patents
330/89 Between adjacent stages 2

Patents under this class:

Patent Number Title Of Patent Date Issued
8098840 Multi-channel output device for a multimedia device Jan. 17, 2012
7348846 Amplifier arrangement Mar. 25, 2008
6265938 Linear high-voltage drive stage and cathode-follower high-fidelity power amplifier implementing same Jul. 24, 2001
6011439 Low power RF amplifier Jan. 4, 2000
5859565 Cathode-follower high-fidelity power amplifier Jan. 12, 1999
5068624 Amplifier Nov. 26, 1991

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