Western Electric Transmitting Tube, Type 270-A, Used at Radio Station WWJ, Detroit, Michigan, circa 1935
Add to SetSummary
Vacuum tubes appear in older radios, televisions, amplifiers, computers, and other electronic devices. Their function: to amplify or transmit electronic signals. Typical tubes are sealed glass bulbs evacuated of gas, allowing electron flow to be influenced by an interior cathode, plate and grid. Perfected in 1906, the vacuum tube was the genesis of a communications revolution.
Vacuum tubes appear in older radios, televisions, amplifiers, computers, and other electronic devices. Their function: to amplify or transmit electronic signals. Typical tubes are sealed glass bulbs evacuated of gas, allowing electron flow to be influenced by an interior cathode, plate and grid. Perfected in 1906, the vacuum tube was the genesis of a communications revolution.
Artifact
Vacuum tube
Date Made
circa 1935
Keywords
Location
Not on exhibit to the public.
Object ID
90.0.85.599
Credit
From the Collections of The Henry Ford.
Material
Canvas
Glass (Material)
Iron alloy
Porcelain (Material)
Wood (Plant material)
Dimensions
Height: 24 in
Width: 10.5 in
Length: 10.5 in
Inscriptions
vacuum tube: Western Electric Made in U.S.A. shipping label: Western Electric Reg. U.S. Pat. Off. 270-A Vacuum Tube Made in U.S.A. [patent information] 1307510 . . . 1809099 shipping label: Graybar Elec. Co., Inc. 55 W. Canfield Detroit, Mich.
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