High-power low-voltage tetrode having a full walled matrix catho

Details High-power low-voltage tetrode having a full walled matrix catho High-power low-voltage tetrode having a full walled matrix catho

1991-12-12

1993-04-27

Pascal, Robert J.

Electric lamp and discharge devices: systems

Discharge device load

Discharge control discharge device load

313293, 313296, 313348, 313248, 328252, H01J 1104, H01J 146

Patent

active

052065650

ABSTRACT:
In a controllable high-power electron tube in the form of a tetrode, the anode direct voltage is reduced to less than 10 kV with an anode efficiency of greater than 80%. The tube includes coaxially arranged electrodes including a cylindrical indirectly heated full walled matrix cathode containing BaO, a cylindrical control grid, a cylindrical screen grid and an anode, where the spacing between the control grid and the cathode and the spacing between the control grid and the screen grid is less than 1 mm. Such a tube can be used for achieving AM broadcast transmitters which are distinguished by a compact construction, the overall efficiency remaining largely unchanged.

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