Diagram of Vacuum-Tube DiodeDiagram of Vacuum-Tube TriodeInside of a vacuum tube with plate cut open.A two-tube homemade radio from 1958. The tubes are the two glass columns with the dark tops. The leads at the bottom connect to the low-voltage filament supply and to the high-voltage anode supplyAn RCA 12AX7 dual-triode tube (1947)

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Sylvania

In electronics, a vacuum tube (U.S. and Canadian English) or (thermionic) valve (outside North America) is a device generally used to amplify, or otherwise modify, a signal by controlling the movement of electrons in an evacuated space. more...

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Lot of Nos and used Boxed Vintage Rca, Nu Sylvania Radio/Tv Vacuum Tubes Lot 3Lot of Nos and used Boxed Vintage Rca, Nu Sylvania Radio/Tv Vacuum Tubes Lot 3 $159.00 Pair of Sylvania Gold Brand Gb 5687 Vacuum Tubes ~microphonicPair of Sylvania Gold Brand Gb 5687 Vacuum Tubes ~microphonic $50.00
New ListingLot Of 2: Type 41 Jan Vt Vacuum Tube Nos Nvt-48 Jan-Chs-41 Sylvania 1940'sNew ListingLot Of 2: Type 41 Jan Vt Vacuum Tube Nos Nvt-48 Jan-Chs-41 Sylvania 1940's $20.00 Quad (4) Sylvania Made 6Lb6 Ham Radio Sweeps Vacuum Tubes Tested S.8567Quad (4) Sylvania Made 6Lb6 Ham Radio Sweeps Vacuum Tubes Tested S.8567 $99.95
Lot of 200+ Nos and used Boxed Vintage Sylvania Radio/Tv Vacuum Tubes Lot 2Lot of 200+ Nos and used Boxed Vintage Sylvania Radio/Tv Vacuum Tubes Lot 2 $199.00 Set Of 4 Sylvania 7558 TubesSet Of 4 Sylvania 7558 Tubes $60.00
Eight Sylvania random Vacuum Tubes Made In Usa Nos Lot Of Eight. In Original BoxEight Sylvania random Vacuum Tubes Made In Usa Nos Lot Of Eight. In Original Box $16.09 Closely Matched Quad of Sylvania (Rca lbl) 5881 Vacuum Tubes #Ec66Closely Matched Quad of Sylvania (Rca lbl) 5881 Vacuum Tubes #Ec66 $150.00
2 Sylvania 7025 Vacuum Tubes2 Sylvania 7025 Vacuum Tubes $60.00 Lot Of 72 Nos Sylvania Vacuum Tubes. All New And GuaranteedLot Of 72 Nos Sylvania Vacuum Tubes. All New And Guaranteed $39.95
Rca Ge Philco Raytheon Sylvania Zenith Electron Vintage Vacuum Tube, NewRca Ge Philco Raytheon Sylvania Zenith Electron Vintage Vacuum Tube, New $4.95 Lot Of 28 Nos Nib Glass Vacuum Tubes Mixed Brands Rca Philco SylvaniaLot Of 28 Nos Nib Glass Vacuum Tubes Mixed Brands Rca Philco Sylvania $22.00
Vintage Electron Vacuum Tubes Huge Lot of 40 Ham Radio Sylvania Rca GeVintage Electron Vacuum Tubes Huge Lot of 40 Ham Radio Sylvania Rca Ge $59.95 Sylvania 6Sn7 Gt Flat Black Plate Audio Tubes Tested Good 8Pcs.Sylvania 6Sn7 Gt Flat Black Plate Audio Tubes Tested Good 8Pcs. $99.00
Vintage Rca Sylvania Philco 45 Vacuum Tubes Set of 3 Made in UsaVintage Rca Sylvania Philco 45 Vacuum Tubes Set of 3 Made in Usa $99.88 Quad of Sylvania 6Bq5 El84 Black Plate Vacuum TubesQuad of Sylvania 6Bq5 El84 Black Plate Vacuum Tubes $150.00
Rca, Sylvania, Raytheon, Ken-Rad, Plyvania Vacuum TubesRca, Sylvania, Raytheon, Ken-Rad, Plyvania Vacuum Tubes $27.50 New ListingMatch Pair Sylvania 6Sn7Gta Chome Dome Premium Vintage Audio Vacuum Tubes O.8473New ListingMatch Pair Sylvania 6Sn7Gta Chome Dome Premium Vintage Audio Vacuum Tubes O.8473 $109.95
Sylvania 5751 Nos, Nib vacuum tubesSylvania 5751 Nos, Nib vacuum tubes $175.00 Sylvania Vintage Vacuum TubeSylvania Vintage Vacuum Tube $25.00
Nos Matched Pair Philips Ecg (Sylvania) Jan 5751 (12Ax7) Vacuum Tubes 8.8205Nos Matched Pair Philips Ecg (Sylvania) Jan 5751 (12Ax7) Vacuum Tubes 8.8205 $109.95 Vacuum Tube Grab Bag! Vintage Lot of ( 100 ) Vacuum Tubes Steam Punk ArtVacuum Tube Grab Bag! Vintage Lot of ( 100 ) Vacuum Tubes Steam Punk Art $27.97
Sylvania Ge Rca Tung-Sol Vintage 6Sn7Gt Vt-231 6Sn7Gtb 6Sn7Gta Tubes (lot of 55)Sylvania Ge Rca Tung-Sol Vintage 6Sn7Gt Vt-231 6Sn7Gtb 6Sn7Gta Tubes (lot of 55) $102.50 5693 Sylvania Nos Tubes - 5x Sleeve - Rca5693 Sylvania Nos Tubes - 5x Sleeve - Rca $175.00
Ge Sylvania Rca Nos Vintage Vacuum Tubes Radio Amp Tubes Lot of 100Ge Sylvania Rca Nos Vintage Vacuum Tubes Radio Amp Tubes Lot of 100 $100.00 Ge Rca Sylvania Raytheon Vacuum Tube Lot Of Over 100 Vintage TubesGe Rca Sylvania Raytheon Vacuum Tube Lot Of Over 100 Vintage Tubes $79.00
Lot Vacuum Tubes Amperex Ge Sylvania Rca, Ham Radio & Electronics Nos & UsedLot Vacuum Tubes Amperex Ge Sylvania Rca, Ham Radio & Electronics Nos & Used $34.99 Lot Of 10+ Vintage Electron Vacuum Tubes Ge Sylvania, Audio, Guitar, SteampunkLot Of 10+ Vintage Electron Vacuum Tubes Ge Sylvania, Audio, Guitar, Steampunk $15.99
45- Tv Radio Electronic Vacuum Tube Lot Motorola Westinghouse Sylvania Ge Shield45- Tv Radio Electronic Vacuum Tube Lot Motorola Westinghouse Sylvania Ge Shield $45.00 New ListingLot Of 5: Radio Amplifier Vacuum Tubes 6Y6Ga Sylvania In BoxesNew ListingLot Of 5: Radio Amplifier Vacuum Tubes 6Y6Ga Sylvania In Boxes $40.00
6J5Gt Vacuum Tubes Lot Of 11 Rca Wards Sylvania Etc Tested Good6J5Gt Vacuum Tubes Lot Of 11 Rca Wards Sylvania Etc Tested Good $16.00 Closely Matched Pair of Sylvania 6Bq5 El84 Black Plate 1962 Vacuum TubesClosely Matched Pair of Sylvania 6Bq5 El84 Black Plate 1962 Vacuum Tubes $90.00
Matched Pair Sylvania Jan 7308/E188Cc Mil-Spec O-Getter Usa 1971Matched Pair Sylvania Jan 7308/E188Cc Mil-Spec O-Getter Usa 1971 $90.00 Assorted Lot of 52 Electronic Vacuum Tubes Ge Rca Sylvania 3Cz3A 38Hk7 10Ja5 +.Assorted Lot of 52 Electronic Vacuum Tubes Ge Rca Sylvania 3Cz3A 38Hk7 10Ja5 +. $26.99
New ListingSylvania Vacuum Tube Caddy Container with Nos/Nib Tubes Not TestedNew ListingSylvania Vacuum Tube Caddy Container with Nos/Nib Tubes Not Tested $29.99 Sylvania, Tung-Sol, Ken-Rad Vacuum Tubes – Lot of 10 Mixed Radio Electron TubesSylvania, Tung-Sol, Ken-Rad Vacuum Tubes – Lot of 10 Mixed Radio Electron Tubes $49.50
Nos Nib Sylvania Gold Brand 5751 (12Ax7 Ecc83) Premium Audio Vacuum Tube 4.8937Nos Nib Sylvania Gold Brand 5751 (12Ax7 Ecc83) Premium Audio Vacuum Tube 4.8937 $69.95 Lot Of 15 Amperex Sylvania Ge Zenith Etc Vacuum TubesLot Of 15 Amperex Sylvania Ge Zenith Etc Vacuum Tubes $27.00
Lot of 14 Vintage Vacuum Tubes Baldwin/ Sylvania Organ Piano 12Au7Lot of 14 Vintage Vacuum Tubes Baldwin/ Sylvania Organ Piano 12Au7 $119.00 Sylvania 12At7 Ecc81 Nos Nib Black Plates Copper Square Get Serious Tubes D747Sylvania 12At7 Ecc81 Nos Nib Black Plates Copper Square Get Serious Tubes D747 $20.00
3 - 6080Wb Sylvania Vacuum Tubes - Tested3 - 6080Wb Sylvania Vacuum Tubes - Tested $19.99 Matched Pair Sylvania Made 6Sl7Gt Vintage Audio Vacuum Tubes Tested C.8680Matched Pair Sylvania Made 6Sl7Gt Vintage Audio Vacuum Tubes Tested C.8680 $39.95
Quad Sylvania 7591A Tested Tubes Usa NiceQuad Sylvania 7591A Tested Tubes Usa Nice $250.00 Vintage Vacuum Electron Tubes Sylvania+Ge (209pcs) Nos Mixed Lot (3)Vintage Vacuum Electron Tubes Sylvania+Ge (209pcs) Nos Mixed Lot (3) $120.00
Vintage 1960s Sylvania Ge 5837 Vacuum Tube with Box NosVintage 1960s Sylvania Ge 5837 Vacuum Tube with Box Nos $29.99 Ge Sylvania Rca Nos and Used Vintage Vacuum Tubes Radio Amp Tubes Lot of 190+Ge Sylvania Rca Nos and Used Vintage Vacuum Tubes Radio Amp Tubes Lot of 190+ $295.95
Pair of Sylvania Gold Brand Gb 5751 Square Getter Vacuum Tubes #1 - 8% matchedPair of Sylvania Gold Brand Gb 5751 Square Getter Vacuum Tubes #1 - 8% matched $300.00 New ListingGreat Pair Sylvania Chrome Top 6V6Gt Amplifier Power Vacuum Tubes O.8637New ListingGreat Pair Sylvania Chrome Top 6V6Gt Amplifier Power Vacuum Tubes O.8637 $39.95
Nos Matched Pair Vt-135 12j5 Sylvania 12J5Gt Audio TubesNos Matched Pair Vt-135 12j5 Sylvania 12J5Gt Audio Tubes $50.00 Lot of 194 Vintage Radio Vacuum Tubes Rca Sylvania Ge many brands representedLot of 194 Vintage Radio Vacuum Tubes Rca Sylvania Ge many brands represented $19.95
Vintage Lot Of Sylvania, Ge General Electric, And Rca Electron Vacuum TubesVintage Lot Of Sylvania, Ge General Electric, And Rca Electron Vacuum Tubes $17.99 Pair of Sylvania (Marconi lbl) 12Ad7 Nos Nib Vacuum TubesPair of Sylvania (Marconi lbl) 12Ad7 Nos Nib Vacuum Tubes $200.00
Vtg Bundle lot Nos Vacuum Tubes & Transistors Rca Ge Raytheon Tung-solVtg Bundle lot Nos Vacuum Tubes & Transistors Rca Ge Raytheon Tung-sol $30.00 Pair of Sylvania Gold Brand Gb 5751 Gold Pin Vacuum Tubes - 7% matchedPair of Sylvania Gold Brand Gb 5751 Gold Pin Vacuum Tubes - 7% matched $200.00
Lot Of 30 Vintage Sylvania Vacuum Tube Tubes Radio Tv Ham Electronics Lot #5Lot Of 30 Vintage Sylvania Vacuum Tube Tubes Radio Tv Ham Electronics Lot #5 $39.00 Lot of 100 Rca Sylvania G.E Tubes 80 Tested 6201 6Js6B 6Sn7 6Bk4 6Gh8 New & UsedLot of 100 Rca Sylvania G.E Tubes 80 Tested 6201 6Js6B 6Sn7 6Bk4 6Gh8 New & Used $89.95
New ListingVintage Vacuum Tube Lot Electron Tubes Ge Rca SylvaniaNew ListingVintage Vacuum Tube Lot Electron Tubes Ge Rca Sylvania $14.40 Closely Matched Pair Jan 12By7A Sylvania Nos Vacuum TubesClosely Matched Pair Jan 12By7A Sylvania Nos Vacuum Tubes $29.00
Sylvania 12Ax7 Vacuum TubesSylvania 12Ax7 Vacuum Tubes $19.95 12Au6 Vacuum Tubes Lot Of 49 Rca Ge Sylvania Tested Good12Au6 Vacuum Tubes Lot Of 49 Rca Ge Sylvania Tested Good $17.50
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