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Image Not Available for electronic switch 829
electronic switch 829
Image Not Available for electronic switch 829

electronic switch 829

Datecirca 1955
Inventory NumberWJ0309
ClassificationSwitch
Subject
    Maker Grason-Stadler Company founded 1949
    Place of OriginWest Concord, Massachusetts, United States
    Dimensions18 × 50 × 33 cm (7 1/16 × 19 11/16 × 13 in.)
    DescriptionMounted in instrument rack #17 (WJ0648)
    Signedplate on front: g stadler / grason / grason-stadler co. / WEST CONCORD * MASSACHUSETTS / ELECTRONIC SWITCH / SERIAL NO. MODEL NO. 829S118
    Curatorial Remarkslocated in basement of William James Hall in the Stevens display weight is an estimate and not necessarily accurate
    FunctionUsed to switch audiometric testing signals in situations where it is necessary to interrupt one or more signals while maintaining control of output characteristics, without introducing clicks or higher harmonic distortion.
    Historical AttributesUsed in the Psycho-Acoustic Laboratory (PAL) in Memorial Hall, Harvard University.
    F500162.pdf
    power supply for pulse generator
    Grason-Stadler Company
    Date: 1955-1962
    Object number: WJ0950
    Image Not Available for pulse generator, audio
    pulse generator, audio
    Grason-Stadler Company
    Date: circa 1955
    Object number: WJ0450
    Image Not Available for power supply for interval timer
    power supply for interval timer
    Grason-Stadler Company
    Date: 1952-1955
    Object number: WJ0546
    Image Not Available for interval timer
    interval timer
    Grason-Stadler Company
    Date: circa 1955
    Object number: WJ0644
    Electronic Voice Operated Relay
    Electronic Voice Operated Relay
    Grason-Stadler Company
    Accessories: None
    Object number: WJ1070
    Switch Trigger for Electronic Switch - Grason-Statler 829
    Switch Trigger for Electronic Switch - Grason-Statler 829
    Object number: WJ1051
    Image Not Available for Light Panel
    Light Panel
    Grason-Stadler Company
    Date: 1962-1965
    Object number: WJ0972
    Image Not Available for Grason-Stadler Type E783B Relay Bank
    Grason-Stadler Type E783B Relay Bank
    Grason-Stadler Company
    Date: 1955-1962
    Object number: WJ0966
    Image Not Available for Controller module for operant conditioning experiments
    Controller module for operant conditioning experiments
    Grason-Stadler Company
    Date: 1962-1965
    Object number: WJ1014
    Image Not Available for Grason-Stadler Type E783B Relay Bank
    Grason-Stadler Type E783B Relay Bank
    Grason-Stadler Company
    Date: 1955-1962
    Object number: WJ0967
    relay rack equipment
    relay rack equipment
    Grason-Stadler Company
    Date: 1960-1970
    Accessories: extra screws and washers
    Object number: 1999-1-0057
    Voice Operated Relay
    Voice Operated Relay
    Grason-Stadler Company
    Object number: WJ0421