De Forest thermionic rectifier
date: label: date made
content: ca 1921
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: Brass base with 4 pins, tipped G-shaped glass envelope. Donor card reads: "Diode, made by De Forest for use in his low powered radio telephone transmitters developed just after World War 1 for amateur and broadcast [operations].. Sold from about 1919 to 1924. A high vacuum diode capable of handling 750 volts at 200 milliamperes."
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324319
label: catalog number
content: 324319
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 3/4 in; 13.335 cm x 6.985 cm