Amperite type 4H-4C current regulator tube
name: label: maker
content: Amperite
notes: label: Description (Brief)
content: A 6-pin plastic base with center post, T-shaped envelope. Stamped "Ballast". Donor’s card reads: “Current regulator tube made by Amperite. Used by the National Company in their HRO-60 communications receiver to provide accurate current regulation to the high frequency oscillator and to the mixer tube, to stabilize the receiver on frequency setting. This tube and a type 6-BE-6 and a 6-C-4 operate in parallel from a separate 13 volt secondary on the power transformer for a total heater current of .45 ampere in the circuit. Connection is made to pins 2 and 7 of this tube. See also: https://www.radiomuseum.org/tubes/tube_4h4c.html.
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.325039
label: catalog number
content: 325039
label: accession number
content: 252994
objectType: label: Object Name
content: Current Regulator
label: Object Name
content: electron tube
label: Other Terms
content: Current Regulator; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 5/8 in x 1 1/4 in; 6.6675 cm x 3.175 cm