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shop-built triode
shop-built triode
© Collection of Historical Scientific Instruments, Harvard University

shop-built triode

Inventory NumberVT0204
ClassificationVacuum Tube
Maker Cruft Laboratory, Harvard University founded 1914
Cultural Region
    Place of Origin
      Dimensions11.2 × 4.5 × 4.5 cm (4 7/16 × 1 3/4 × 1 3/4 in.)
      Material
        Description"COILS WRAPPED ON BASE, TIED TO PINS"
        Triode, slightly silvered glass envelope, bakelite 5 pin base.
        Signedunsigned
        FunctionExperimental
        VTNBK 4/633
        shop-built triode
        Cruft Laboratory, Harvard University
        Object number: VT0197
        triode model
        triode model
        Cruft Laboratory, Harvard University
        Date: 1928
        Object number: 1998-1-1534
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1919
        Object number: VT0188
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1920
        Object number: VT0189
        VTNBK 6/832
        shop-built solenoid
        Cruft Laboratory, Harvard University
        Object number: VT0251
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1925
        Object number: VT0187
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: 1919
        Object number: VT0183
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1919
        Object number: VT0193
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1919
        Object number: VT0192
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1919
        Object number: VT0196
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: circa 1923
        Object number: VT0190
        experimental triode tube
        experimental triode tube
        Cruft Laboratory, Harvard University
        Date: 1925
        Object number: VT0185