Recent Articles



































Grid leak



         


Grid leak is an inherent operating characteristic of triodes and other vacuum tubes. It is the small flow of current through the grid of a tube into the circuit which feeds the grid. This current is caused by the small negative EMF which is present in all vacuum valves as a result of a space charge within the envelope of the tube. The space charge is part of the thermionic effect, which is the fundamental phenomenon behind all vacuum tubes.





  View Live Article   This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License