Raytheon type B full-wave rectifier
name: label: maker
content: Raytheon
label: maker
content: Raytheon Manufacturing Co.
notes: label: Description (Brief)
content: Helium-filled half-wave rectifier. A 4-pin base with brass shell and ceramic insulator. Tipped S-shaped envelope. Maker's stamping on base reads: "Raytheon / Type B Patented / June 27, 1922 July 7, 1925 / Other Patents Pending / Raytheon Mfg. Company / Cambridge Mass." Paper label on envelope: "Form F / This tube returned not / subject to adjustment. / Tube shows age in excess / of one year / Raytheon / Manufacturing Co. / 238 Main Street / Cambridge, Mass." Two ceramic-covered cylinders are set side by side on top the stem press. A metal top hat is mounted above the cylinders with metal tines that are attached to the stem below the press. Reference: https://www.radiomuseum.org/tubes/tube_b_raytheon.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN79819U20
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: isolantite (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: electron tube, diode: 11 cm x 4 cm; 4 5/16 in x 1 9/16 in