Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 330/142
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Cathode resistor supplies bias (e.g., self-biasing circuits)
Description: Subject matter involving a vacuum tube amplifying device whose input electrode bias voltage and/or bias control voltage for the same amplifying device is supplied from a resistive circuit network in the cathode to ground path of the vacuum tube amplifying device whereby the plate current flowing through such resistor, which is usually by-passed for signal current frequencies, develops a D.C. bias voltage at the cathode.

Patents under this class:

Patent Number Title Of Patent Date Issued
7511573 Input/output signals preserver circuit of amplification circuits Mar. 31, 2009

  Recently Added Patents
Process information structuring support method
Method and system for providing an intelligent visual scrollbar position indicator
Vehicle-mounted camera stabilized passively by vibration isolators
Solar-powered roadway light
Optical writer and image forming apparatus including same
Digital display
Systems and/or methods for using air/wind power to charge/re-charge vehicle batteries
  Randomly Featured Patents
Hard real-time response
Vehicle seat apparatus
Method and apparatus for transmitting radio frequency signals to and from a pager
Semiconductor package for efficient heat spreading
Three-dimensional, rotatable, pyramid game
Restricted software and hardware usage on a computer
Cathode-ray tube
Optical cable exit trough
Method of making multi-ply door core, multi-ply door core, and door manufactured therewith
Proximity responsive apparatus