A triode is an electrical circuit component that uses a small voltage to control a relatively large flow of current. A triode contains three electrodes, a cathode, an anode, and a control grid. The name triode is derived from the term tri-electrode...

A triode is an electronic device having three active electrodes. The term most commonly applies to a vacuum tube (or valve in British English) with three elements: the filament or cathode, the grid, and the plate or anode. The triode vacuum tube is...