Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/81
Name: Amplifiers > Signal feedback > At least one push-pull signal stage
Description: Subject matter including at least one stage of push-pull signal amplification.

Sub-classes under this class:

Class Number Class Name Patents
330/83 Including d.c. path for signal feedback 3
330/82 Positive and negative feedback 6

Patents under this class:

Patent Number Title Of Patent Date Issued
8446228 Oscillator circuit May. 21, 2013
8022776 Origami cascaded topology for analog and mixed-signal applications Sep. 20, 2011
6069503 High value FET resistors on a submicron MOS technology May. 30, 2000
5604461 Transformerless output vacuum tube audio amplifier Feb. 18, 1997
4321552 Amplifier comprising a first and a second amplifier element Mar. 23, 1982
4112386 Modular radio frequency amplifier having a gain variable by external passive component selection Sep. 5, 1978
4066975 Audio amplifier with improved stability Jan. 3, 1978

  Recently Added Patents
Dynamic facsimile transcoding in a unified messaging platform
Glass or glass-ceramic pane reflecting infrared radiation
Providing a multi-tenant knowledge network
Automated dynamic differential data processing
Agglutination judgment method
Systems and methods for switching supply load current estimation
System and method for text input with a multi-touch screen
  Randomly Featured Patents
Process for preparing solutions of electrolytes for solid polymer batteries by transfer from the polymer synthesis solvent
Press machine
Cooler on wheels
End curtain for gymnasium seating
Spelling verification system with immediate operator alerts to non-matches between inputted words and words stored in plural dictionary memories
Headband and eyepiece combination
Modular adaptor ring assembly for a night vision device
Module manager for wide-array inkjet printhead assembly
Method and apparatus for coupling and uncoupling an injection valve pin
Fabricating very thin chip size semiconductor packages