Resources Contact Us Home
R.F. switched amplifier and A.M. modulator

Image Number 2 for United States Patent #4350962.

An amplifier circuit incorporating a valve or vacuum tube in the grounded grid configuration is disclosed. The anode D.C. potential is greater than the cathode D.C. potential which is in turn greater than the grid D.C. potential. The cathode is switched at an R.F. rate to a further D.C. potential below that of the grid. Preferably the grid potential substantially cuts off cathode current flow with the switch open. The amplifier finds particular application as an output amplifier in an A.M. R.F. transmitter with the modulation being provided by high level anode modulation. The tube or valve can be a triode, tetrode, or pentode.

  Recently Added Patents
Matching geometry generation and display of mammograms and tomosynthesis images
Liposomal nanoparticles and other formulations of fenretinide for use in therapy and drug delivery
Enediyne compounds, conjugates thereof, and uses and methods therefor
Precision geolocation of moving or fixed transmitters using multiple observers
Circuit design approximation
Output queued switch with a parallel shared memory, and method of operating same
Formulations, their use as or for producing dishwashing detergents and their production
  Randomly Featured Patents
Contact capping local interconnect
Inrush current measuring apparatus with instantaneous power interruption device
Method and apparatus for controlling peak power requirements of a printer
Airborne surveying apparatus and method
Between the studs grip clips
Voice telephone dialing architecture
Color stable aromatic polyesters
Snap latch drum release for a drain cleaning machine
Field-effect magnetic sensor
Organic superconductors with high transition temperatures and high critical magnetic fields