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
Automatic population of feature capabilities on a communication device
Quantifying the risks of applications for mobile devices
Randomly accessible visual information recording medium and recording method, and reproducing device and reproducing method
Method and device for managing subscriber connection
Cooling structure for electronic device
Emergency power-off button with proximity alarm
Systems, methods, and apparatus to prepare a mobile device for provisioning
  Randomly Featured Patents
New kiwi plant entitled `Hortgem Tahi`
Teeter totter
Catheter introducer having an expandable tip
Method of forming layered images of objects from superposition images of different image planes
Fastener driving device with enhanced sequential actuation
Therapeutic compositions comprising excess enantiomer
Barrier with a seated ion exchange bead and method
Angular-precision enhancement in free-space micromachined optical switches