Crossword clues for Vacuum tubes. 6 letters:DIODESVacuum tubes, used to rectify alternating currents.TRIODEVacuum tube with three elementsTRIODEThree-element vacuum tubeTRIODEThree-part vacuum tube in old TVsTRIODEA vacuum tubeTRIODEVacuum tube typeTRIODEType of vacuum tubeAUDIONVacuum tube.TRIODEVacuum tube with three componentsDYNODEVacuum tube featureDIODESVacuum tubes.TRIODEThree-part vacuum tubeTRIODECertain vacuum tubeTRIODEOld vacuum tubeANODESVacuum tube partsTRIODEVacuum tubeANODESPositive poles in vacuum tubes.DYNODEVacuum tube componentANODESVacuum tube terminalsDIODEVacuum tube typeELECTRONSTREAMVacuum-tube flowANODE___ dark space (region in a vacuum tube)ATRIODEOne vacuum tubeNEONIt glows red in a vacuum tube.PENTODEVacuum tube.ELEMENTOne of the electrodes in a vacuum tube.DIODEForm of vacuum tube.NEONVacuum tube light.KENOTRONVacuum tube used in television.ANODEVacuum tube part.NEONLight in a vacuum tube.ANODEVacuum tube electrode.DIODEVacuum tube rectifier.TETRODEVacuum tubePERMATRONVacuum tubeDYNATRONVacuum tubeTETRODEType of vacuum tubeTRONWord form meaning "vacuum tube"TETRODESCertain vacuum tubesTRIODESVacuum tubesNEONElement in vacuum tubesTHORIUMElement in vacuum tube filamentsNIKOLATESLAInventor of an A.C. motor and transformer, X-ray technology, and a vacuum tube amplifier: 2 wds.ARGONGas in a vacuum tubeDIODECertain vacuum tubeENIACVacuum tube innovation of 1946PENTODEVacuum tube with five active componentsCATHODERAYBeam in a vacuum tubeCATHODERAYKind of vacuum tube in screensTRIODESThree-element vacuum tubes