Valve Tube
date: label: associated dates
content: 1978 02 / 1978 02
notes: label: Description
content: This type of tube was used in a series or parallel circuit with an x-ray tube when an alternating current source of high voltage (e.g., an induction coil) was used. It was proposed by Paul Villard (1860-1934), a French chemist and physicist, and called a "valve tube" because it would only permit current to flow through the tube in one direction. The coil side was connected to the anode (the target) of the x-ray tube.
label: Location
content: Currently not on view
place: label: Associated Place
content: United States: New York, New York City
label: associated place
content: United States: Rhode Island, East Providence, Rumford
setName: label: See more items in
content: Medicine and Science: Medicine
creditLine: label: Credit Line
content: Philip Batchelder, M.D.
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1978.0121.25
label: catalog number
content: 1978.0121.25
label: accession number
content: 1978.0121
objectType: label: Object Name
content: valve tube
label: Object Name
content: tube, valve
label: Object Name
content: cold cathode rectifier
physicalDescription: label: Physical Description
content: glass (overall material)
label: Measurements
content: overall: 10 cm x 28.5 cm x 12.5 cm; 3 15/16 in x 11 1/4 in x 4 15/16 in