Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/119
Name: Amplifiers > Including a push-pull stage > Coupling to or from cathode in push-pull
Description: Subject matter wherein the two amplifying devices in push-pull are vacuum tube amplifying devices and wherein the input electrodes or the output electrodes are the cathode electrodes of the vacuum tube amplifying devices.

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
7173488 Vacuum tube power amplifier switchable between push-pull and single ended configurations Feb. 6, 2007
6937093 Cathode-coupled pentode valve amplifier with servo offset controlled push-pull output stage Aug. 30, 2005
6507240 Hybrid audio amplifier Jan. 14, 2003
6265938 Linear high-voltage drive stage and cathode-follower high-fidelity power amplifier implementing same Jul. 24, 2001
5859565 Cathode-follower high-fidelity power amplifier Jan. 12, 1999

  Recently Added Patents
Synthetic refrigeration oil composition for HFC applications
Multilayered material sheet and process for its preparation
Method for counting and segmenting viral particles in an image
Apparatus and method for transmitting and receiving data
Liquid low temperature injection molding process
Blocky hydroxyethylcellulose, derivatives thereof, process of making and uses thereof
  Randomly Featured Patents
Article of footwear with an intermediate sized outsole and method of making
Methods for manufacturing integrated circuit devices having features with reduced edge curvature
Disk controller for a plurality of magnetic disk drives
Fuel injector retainer clip
Method and device for preparing a fuel, particularly for diesel engines, by on-line mixture of its components
Training tennis racket
Systems and methods for hazards analysis
Incontinent prothesis and method
Pool grating and a method of installation
Thio compounds having fungicidal activity