Texas Instruments AC Adapter/Charger Model AC9200

This black plastic power supply has metal prongs to fit into a wall socket and a plastic-covered plug to fit into a calculator. A mark on the object reads in part: DYNAMIC INSTRUMENT CORP. (/) U.S. PAT. 3237079 & 3371302 (/) OTHER PATENTS PENDING 8 73 (/) MADE IN U.S.A. According to the Datamath calculator museum, this component was used by Texas Instruments with the third version of the TI-2500 calculator, the SR-10, the SR-11, the SR-16, the SR-50, and the SR-51.
Online Datamath museum, accessed June 23, 2015.
Currently not on view
Object Name
power supply
date made
Dynamic Instrument Corporation
Physical Description
plastic (case; cord material)
metal (circuitry material)
overall: 2 1/4 in x 2 in x 2 in; 5.715 cm x 5.08 cm x 5.08 cm
place made
United States
ID Number
catalog number
accession number
Computers & Business Machines
Handheld Electronic Calculators
See more items in
Medicine and Science: Computers
Handheld Electronic Calculators
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Gift of John B. Priser

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