DC Power Supply
Datecirca 1959
Inventory NumberWJ1008
ClassificationPower Supply
Subject
Dimensions17.8 × 7.6 × 5.1 cm (7 × 3 × 2 in.)
Material
DescriptionBlack rectangular panel flat panel with silver circuit box attached on back. Red knob on front.,rectangle. Mounted in instrument rack (WJ1011)
Curatorial RemarksOriginally mounted in instrument rack (WJ1005) for exhibit in William James Hall (basement), removed 2016, and remounted onto instrument rack (WJ1011) for new exhibit in William James Hall (ninth floor)
FunctionSwitched on by the on-off module. This unit supplied the 28 volt DC current to operate the logical circuits reinforcer dispenser and recording devices.
Historical AttributesOne of many typical modular programming devices used in the late 1950s and early 1960's in B. F. Skinner's laboratory in the basement of Memorial Hall at Harvard University as part of his experiments on operant conditioning and behavioral psychology.
Weston Electrical Instrument Corporation
Date: 1931
Accessories: sheet containing instructions for use (originally for another instrument, DuMont), in instrument file
Object number: RS0347
Harrison Laboratories Inc.
Date: mid 20th-late 20th Century
Accessories: Red and black patch cords, still plugged into front of unit.
Object number: 2004-1-0416
Electron Arc, Inc.
Date: circa 1950
Accessories: base; cover
Object number: 2007-1-0085
Applied Physics Corporation
Date: circa 1951
Object number: 1995-1-0037b
Fairchild Aerial Camera Corporation
Date: 1930-1936
Object number: RS0385c
