General Electric type VT121 / JHY 955 "acorn" tube
date: label: date made
content: ca 1945
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: General Electric type VT-121 / JHY 955 acorn tube. The acorn valves were the product of RCA research into making high frequency valves. The requirement was to make a linear reduction in all dimensions so as to reduce the inter-electrode capacitances. The acorn types had about half of the capacitances of other valves of the mid 1930s and could operate at up to 400 MHz. The acorn envelope is 14 mm in diameter, and excluding the pins is 30 mm tall. References: Datasheet 1040. Type VT-121 was first introduced in 1934. Printed on tube: "JHY 955 VT-121".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Carnegie Institution
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2014.0295.45
label: accession number
content: 2014.0295
label: catalog number
content: 2014.0295.45
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 1 1/4 in x 1 in x 3/4 in; 3.1496 cm x 2.54 cm x 1.905 cm