File:NIE 1905 Telegraph - polarized relay - diagram.jpg
NIE_1905_Telegraph_-_polarized_relay_-_diagram.jpg (565 × 338 pixels, file size: 35 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary
editDescriptionNIE 1905 Telegraph - polarized relay - diagram.jpg |
English: Diagram to illustrate the operation of a polarized telegraph relay: n s is a hard steel permanent magnet, whose south end, s, has a slit in which the soft iron armature a is pivoted. To this armature a thin aluminum tongue, b, is attached, which by making contacts on either side completes either of two local circuits, and operates either of two sounders, according to which side the tongue is attracted. The coils on the magnet are so connected that a positive current attracts the tongue to one side, while a negative current attracts it to the other. |
Date | published 1905 |
Source | “Telegraph,” The New International Encyclopædia, v. 19, 1905, p. 95. |
Author | unknown author |
Licensing
editPublic domainPublic domainfalsefalse |
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
|
||
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
|
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 19:16, 17 August 2017 | 565 × 338 (35 KB) | Bob Burkhardt (talk | contribs) | {{Information |Description ={{en|1=Diagram to illustrate the operation of a polarized telegraph relay: ''n s'' is a hard steel permanent magnet, whose south end, ''s'', has a slit in which the soft iron armature ''a'' is pivoted. To this armature... |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
File usage on other wikis
The following other wikis use this file:
- Usage on en.wikisource.org