Westinghouse made tubes from the 1920s to the 1960s. The plant in Elmira/Horseheads, NY made power tubes exclusively after receiving tubes were switched to Canadian Westinghouse in the late 60s. Richardson Electric bought up the industrial power tube line and moved it to Geneva, IL.
When did Westinghouse stop making tubes?
1960s The move would affect about 1,200 employees at the Westinghouse facility in Horseheads, N. V., where the tubes are manufactured. Westinghouse, one of the earliest companies in television, ceased manufacturing its own sets in the late 1960s.
Who made Sylvania tubes?
Only Sylvania and National Union had the equipment to make them. Despite what a tube has printed, they were made by one of the two companies only. Youll find Loctal tubes branded everything from RCA to Westinghouse .Common USA EIA Codes.Amperex (USA)111Electrons, Inc93524 more rows
How can you tell a 12ax7 tube?
They can be identified by the Gold Mullard 10M Logo on the tube and they have gold or regular pins. The Gold Pin versions are superior and worth more. These tubes are highly sought after by audiophiles. They have a wide-band sound similar to a Telefunken, but with a touch of that Mullard warmth.
Is Sylvania out of business?
In other parts of the world, Sylvania became SLI Holdings, which then became Havells Sylvania and is now Feilo Sylvania. December 2015: OSRAM announced that it would carve-out its general lighting lamps business.
Who bought out Sylvania?
OSRAM GmbH OSRAM SYLVANIA was created in January 1993, when OSRAM GmbH acquired the SYLVANIA and precision materials businesses in North America from GTE. LEDVANCE was launched as an independent company during the summer of 2016 when it separated from OSRAM.
Who made Valvo tubes?
C.H.F. Mueller GmbH Valvo started as Radio-Roehren-Fabrik GmbH (RRF GmbH) in 1924 as the vacuum tube manufactuing arm of C.H.F. Mueller GmbH which only produced X-ray tubes. The company was renamed Valvo in 1926. Phillips bought C.H.F.
Are vacuum tubes still used?
1990s-Today - Vacuum tubes are still used today. Musicians still use tube amplifiers and claim they produce a different and desirable sound compared to solid state amplifiers.
Who made the best vacuum tubes?
There is no bigger name in the history of vacuum tubes than Western Electric. Western Electric engineered, designed, produced or experimented with over 785 different tubes from 1913 - 1988. Many of these tubes were superb sounding audio tubes that are still in very high demand today.
Did OSRAM buy Sylvania?
Continuing to reshape itself into a high-tech company focused on digital applications for LEDs, Osram said it has found a buyer for its Sylvania Lighting Solutions (SLS) group, its North American services unit which had sales last year of around $100 million.
Does OSRAM own Sylvania?
Osram took ownership of the Sylvania name in 1993 when it acquired the Sylvania business from GTE in the US. It has licensed the name to LEDvance for use in the US and Canada since before 2017, when it sold LEDvance to a consortium of three Chinese companies.
Are vacuum tubes worth any money?
Some older Western Electric tubes unused or the original box will sometimes sell for over a thousand dollars at auction. Any early vacuum tube with a “tip” (the little glass nub on the top) and a brass base has some value to collectors even if its just usable for display.