903001 Replace Electrical Transformer Super System (NMAH)
- Level:
- file
- Collection ID:
- Accession 92-068
- Repository:
-
Smithsonian Institution Archives
7900104 Electric Transformer study, 11/7/1978
- Level:
- file
- Collection ID:
- Record Unit 638
- Repository:
-
Smithsonian Institution Archives
Polychlorinated Biphenyls (PCB's) Records
This accession consists of records that document the identification, sampling, clean up, removal, and replacement of electrical transformers and lighting ballasts containing Polychlorinated Biphenyls (PCB's), throughout the Smithsonian Institution. Materials include correspondence and memoranda, sampling logs, test analyses, certificates of disposal, vendor files, waste transfer forms, and transformer removal manifests …
William W. Brown Papers
35 binders of engineering drawings, correspondence, and charts concerning high frequency alternators, low and high frequency antenna systems, insulators, conductors, power transformers, cables, and vacum tubes.
US 593,138, Electrical Transformer
- Level:
- file
- Dates:
-
1897 November 2
- Collection ID:
- NMAH.AC.0915
- Repository:
-
Archives Center, National Museum of American History
US 433,702, Electrical Transformer or Induction Device
- Level:
- file
- Dates:
-
1890 August 5
- Collection ID:
- NMAH.AC.0915
- Repository:
-
Archives Center, National Museum of American History
Untitled
- Level:
- file
- Collection ID:
- Accession 18-094
- Repository:
-
Smithsonian Institution Archives
Subject 40 - Electric Transformers
Reel 12 Project Files:
- Level:
- file
- Collection ID:
- Accession 94-009
- Repository:
-
Smithsonian Institution Archives
Episode 238
- Level:
- item
- Dates:
-
1955 May 7
- Size:
-
1 Motion picture film
- Collection ID:
- NMAH.AC.0507
- Repository:
-
Archives Center, National Museum of American History
Halacsy and Von Fuchs Documentation for Transformer History
Halacsy, Andrew, Dr. (electrical engineer)
Contains information directly relevant to the transformer's 1884-1885 evolution and secondary references and articles which von Fuchs and Halacsy referred to in their research.
