To Or From An Auxiliary Grid Or To The Anode Patents (Class 330/111)
  • Patent number: 10216205
    Abstract: A number of low voltage vacuum tube circuits include using supply voltages well below the manufacturer's recommended voltages applied to the plate or screen grid. Some of the tube circuits operate at near zero plate and or screen grid voltages. Other low voltage circuits have forward biasing on one or more grids that are normally biased at a non positive voltage or a grid that is normally connected a cathode. Substantially lower supply voltages allow for example, the filament supply to also supply voltage to the plate and or grid for providing an output signal at a grid and or a plate.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: February 26, 2019
    Inventor: Ronald Quan