suppressor grid การใช้

• A pentode has an additional suppressor grid ( g3 ) to eliminate the tetrode kink.
• The device had no suppressor grid.
• A suppressor grid is also called the antidynatron grid, as it helps to reduce the dynatron effect.
• Examining the mica spacer on the top of the tube will confirm the lack of a suppressor grid.
• Grid 4 screened this from the anode, and grid 5 was a suppressor grid to suppress secondary emission.
• The suppressor grid is given a low potential, it is usually either grounded or connected to the cathode.
• Pentodes are made in two classes : those with the suppressor grid wired internally to the cathode ( e . g.
• The suppressor grid is usually connected to the cathode and more often than not, this connection is made within the glass envelope.
• The primary electrons from the cathode have a higher kinetic energy, so they can still pass through the suppressor grid and reach the anode.
• EL84 / 6BQ5 ) and those with the suppressor grid wired to a separate pin for user access ( e . g . 803, 837 ).
• A "'suppressor grid "'is a grid used in a thermionic valve ( also called vacuum tube ) to suppress secondary emission.
• Secondary emission electrons from the anode are repelled by the negative potential on the suppressor grid, so they can't reach the screen grid but return to the anode.
• The solution was to add another grid between the screen grid and the main anode, called the suppressor grid ( since it suppressed secondary emission current toward the screen grid ).
• The American devices although having no secondary emission due to the suppressor grid, nevertheless were able to get the required non linearity by biasing the oscillator such that the valve was overdriven.
• In its simplest form, a suppressor grid, typically of coarse structure, is interposed between the screen grid and the anode ( plate ) of a tetrode, turning it into a pentode.
• The pentode, as introduced by Tellegen, has an additional electrode, or third grid, called the suppressor grid, located between the screen grid and the anode, which solves the problem of secondary emission.
• In the transitron circuit, the screen and suppressor grids are coupled with a bypass capacitor ( " C2 " ) which has a low impedance at the oscillation frequency, so they have a constant potential difference.
• EMI engineers Cabot Bull and Sidney Rodda improved the Harries design with a pair of beam plates, connected to the cathode, which directed the electron streams into two narrow areas and also acted like a suppressor grid to deflect some secondary electrons back to the anode.
• EMI engineers Cabot Bull and Sidney Rodda improved the Harries design with a pair of beam plates, connected to the cathode, which directed the electron streams into two narrow areas and also acted like a suppressor grid to redirect some secondary electrons back to the anode.
• Since the suppressor grid voltage and not the screen grid voltage controls the screen current, if the suppressor and screen grid are coupled together with a capacitor ( " C2 " ) so there is a constant potential difference between them, increasing the screen grid voltage will increase the suppressor voltage, resulting in a decrease in screen current.