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
Liquid crystal display and chip on film thereof
Medical benefits payment system
Mechanical pitch shifter
Display screen with animated graphical user interface
Self-assembly of chips on a substrate
Enhanced error handling for self-virtualizing input/output device in logically-partitioned data processing system
Display substrate, method of manufacturing the same and display device having the same
  Randomly Featured Patents
Process for producing heparinase
Inline, point-of-use air/gas dryness indicator
Disc cartridge having disc access opening
Rotary compressor with tapered valve ports for lubricating pump
Plastic porch or deck railing systems and component parts thereof
Means for electrically contacting flash lamp having external conductive coating
Lead sealant film and non-aqueous electrolyte battery
Ergonomic packs for production supply
Generic gate level model for characterization of glitch power in logic cells