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
Particle measurement process and apparatus
Pixel circuit
Additives for oil recovery from reservoirs
Methods, systems and apparatus for displaying the multimedia information from wireless communication networks
Wide bandwidth hybrid antenna for combination EAS and RFID label or tag
Electronic device with multi-orientation
Inhibitors of bacterial nitric oxide synthase, and related screening methods
  Randomly Featured Patents
Transmission cable for a computer and an electronic device
N-heterocyclic-N-(4-piperidyl)amides and pharmaceutical compositions and their use as analgesics
Method and system for channel estimation in a single channel (SC) multiple-input multiple-output (MIMO) system comprising two-transmit (2-Tx) and multiple-receive (M-Rx) antennas for WCDMA/HSD
Flash memory device error correction code controllers and related methods and memory systems
Beater mill with integrated centrifugal classifier
Assemblies of panels with a sealing spring fastener comprising a closed cavity
Antimicrobial Toothpaste
Camera with combination multi-lamp flash source and exposure counter
Method and system for providing fault tolerance in a network