About Magazine Podcasts Events
Museum Hours:Closed until March 8, 2025

Digital Collections

Publications

Design and Construction of Audion Amplifying Transformers, Radio and Audio Types

  • Construction details and directions for making these two types of amplifying transformers

  • 1920

Rights

Public Domain

Download all 20 images

PDFZIPof full-sized JPGs

Download selected image

Small JPG1200 x 1639px — 280 KBFull-sized JPG2314 x 3161px — 740 KBOriginal fileTIFF — 2314 x 3161px — 21.0 MB
View
Public
Domain
Searchable PDF
may contain errors
Download PDF
ZIP
of full-sized JPGs
Download ZIP

Informational pamphlet discussing audion transformers suitable for use in the construction of amplifiers. The transformer described is said to amplify audio signals up to four hundred times. Describes the construction, materials, and technical specifications of the radio frequency and audio frequency type transformers. Illustrated throughout. Work is digitized in its entirety.

Author
Publisher
Place of publication
Format
Genre
Extent
  • 16 pages
  • 19 cm H
Language
Subject
Rights Public Domain Mark 1.0
Credit line
  • Courtesy of Science History Institute

Institutional location

Department
Collection
Physical container
  • Shelfmark TK5865 .J66 1920

View in library catalog

Related Items

Cite as

Jones, Edward Thomas. “Design and Construction of Audion Amplifying Transformers, Radio and Audio Types.” New York, New York: The Experimenter Publishing Co., 1920. TK5865 .J66 1920. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/30vlzrd.

  Export citation (RIS) ?

This citation is automatically generated and may contain errors.

Rights

Public Domain

Download selected image

Small JPG1200 x 1637px — 179 KBFull-sized JPG2307 x 3147px — 504 KBOriginal fileTIFF — 2307 x 3147px — 20.8 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1659px — 154 KBFull-sized JPG2286 x 3161px — 432 KBOriginal fileTIFF — 2286 x 3161px — 20.7 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1659px — 121 KBFull-sized JPG2286 x 3161px — 378 KBOriginal fileTIFF — 2286 x 3161px — 20.7 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1659px — 271 KBFull-sized JPG2286 x 3161px — 698 KBOriginal fileTIFF — 2286 x 3161px — 20.7 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1656px — 236 KBFull-sized JPG2285 x 3154px — 619 KBOriginal fileTIFF — 2285 x 3154px — 20.7 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1678px — 280 KBFull-sized JPG2260 x 3161px — 714 KBOriginal fileTIFF — 2260 x 3161px — 20.5 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1657px — 206 KBFull-sized JPG2289 x 3161px — 598 KBOriginal fileTIFF — 2289 x 3161px — 20.8 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1676px — 261 KBFull-sized JPG2258 x 3154px — 683 KBOriginal fileTIFF — 2258 x 3154px — 20.4 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1643px — 246 KBFull-sized JPG2309 x 3161px — 650 KBOriginal fileTIFF — 2309 x 3161px — 20.9 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1677px — 175 KBFull-sized JPG2247 x 3140px — 467 KBOriginal fileTIFF — 2247 x 3140px — 20.2 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1644px — 262 KBFull-sized JPG2307 x 3161px — 709 KBOriginal fileTIFF — 2307 x 3161px — 20.9 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1683px — 190 KBFull-sized JPG2244 x 3147px — 505 KBOriginal fileTIFF — 2244 x 3147px — 20.3 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1646px — 254 KBFull-sized JPG2300 x 3154px — 669 KBOriginal fileTIFF — 2300 x 3154px — 20.8 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1683px — 266 KBFull-sized JPG2244 x 3147px — 702 KBOriginal fileTIFF — 2244 x 3147px — 20.3 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1662px — 285 KBFull-sized JPG2277 x 3154px — 783 KBOriginal fileTIFF — 2277 x 3154px — 20.6 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1678px — 249 KBFull-sized JPG2251 x 3147px — 701 KBOriginal fileTIFF — 2251 x 3147px — 20.3 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1643px — 230 KBFull-sized JPG2314 x 3168px — 612 KBOriginal fileTIFF — 2314 x 3168px — 21.0 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1664px — 120 KBFull-sized JPG2279 x 3161px — 342 KBOriginal fileTIFF — 2279 x 3161px — 20.7 MB

Rights

Public Domain

Download selected image

Small JPG1200 x 1658px — 287 KBFull-sized JPG2293 x 3168px — 733 KBOriginal fileTIFF — 2293 x 3168px — 20.8 MB

The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.