| 摘要 |
The invention relates to electronic engineering, in particular to vacuum triodes for switching heavy currents by low voltages which use field cold cathodes. The invention can be used for components of functional electronics such as: amplifiers, generators, short high-voltage pulse formers etc. The components of functional electronics based on the inventive device can be used for household appliances, in the automobile industry, in plasma chemistry, energetics and for aviation and rocket engineering. The inventive method for controlling a lamp self-emitting current consists in modifying a field quantity near a cathode by modifying a distance between the cathode and anode thereof. The inventive self-emitting lamp comprises an anode and a self-emitting cathode which are remote from each other at a small distance, wherein the self-emitting cathode is embodied in the form of a multi-point electron source representing a surface provided with regular micron projections, whose specific ohmic resistance is several orders greater than a specific resistance of metals, and is mounted on an element which modifies geometrical dimensions when is exposed to the action of a supplied energy. Said invention makes it possible to increase the reliability of the lamp operating control by means of thegalvanic separation of the control and output circuits of the self-emitting lamp, to increase the power, voltage and current amplification factor and to extend the permissible voltage,current and power range.
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