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triode

listen to the pronunciation of triode
English - English
A thermionic valve containing an anode, a cathode, and a control grid; small changes to the charge on the grid control the flow from cathode to anode which making amplification possible
{i} vacuum tube having three elements (Electronics)
a three-element electron tube, containing a grid, cathode, and plate as active elements, in addition to the filament
A vacuum tube containing three elements: cathode, control grid and plate, the basic amplification tube in almost every amplifier
a thermionic vacuum tube having three electrodes; fluctuations of the charge on the grid control the flow from cathode to anode which making amplification possible
A vacuum tube featuring three elements, like a 300B or 2A3 or most small signal preamp and pre-driver tubes like 12AX7s