File:The Bell System technical journal (1922) (14753293091).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Original file ‎(1,640 × 1,320 pixels, file size: 682 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary[edit]

The categories of this image need checking. You can do so here.
  • Please remove redundant categories and try to put this image in the most specific category/categories.
  • You can remove this template by clicking here (or on the first line).



Description
English:

Identifier: bellsystem00technivol33amerrich (find matches)
Title: The Bell System technical journal
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company
Subjects: Telecommunication Electric engineering Communication Electronics Science Technology
Publisher: (Short Hills, N.J., etc., American Telephone and Telegraph Co.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
Pig. 1 — Schematic diagram of electronic relay tester. ELECTRONIC RELAY TESTER 927
Text Appearing After Image:
cient gain to provide adequate deflection voltage to the horizontal platesof the scope. The oscillator comprises a 6AU6 pentode tube and an associated tankcircuit. The tube is connected as an electron coupled oscillator with theenergy for the oscillations being supplied by the screen circuit. The plateoutput is a modulated current that passes through the screen and sup-pressor grids. Considerable isolation of the coupling circuit from theoscillator is obtained by this arrangement. An antiresonance circuit similar to the tank circuit is used to couplethe plate of the oscillator tube to the rectifier. Since the electron coupledoscillator acts as a high impedance generator or constant current sourcethe voltage across the coupling impedance is proportional to the valueof the impedance. Hence as the oscillator frequency is shifted by a changeill the position of the armature a corresponding shift occurs in the acvoltage across the coupling impedance and rectifier tube (6AL5). Theoutput volt

Note About Images

Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Date
Source

https://www.flickr.com/photos/internetarchivebookimages/14753293091/

Author Internet Archive Book Images
Permission
(Reusing this file)		 At the time of upload, the image license was automatically confirmed using the Flickr API. For more information see Flickr API detail.
Flickr tags
InfoField
  • bookid:bellsystem00technivol33amerrich
  • bookyear:1922
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:American_Telephone_and_Telegraph_Company
  • booksubject:Telecommunication
  • booksubject:Electric_engineering
  • booksubject:Communication
  • booksubject:Electronics
  • booksubject:Science
  • booksubject:Technology
  • bookpublisher:_Short_Hills__N_J___etc___American_Telephone_and_Telegraph_Co__
  • bookcontributor:Prelinger_Library
  • booksponsor:Internet_Archive
  • bookleafnumber:954
  • bookcollection:prelinger_library
  • bookcollection:additional_collections
  • bookcollection:americana
  • BHL Collection
Flickr posted date
InfoField
27 July 2014

Licensing[edit]

This image was taken from Flickr's The Commons. The uploading organization may have various reasons for determining that no known copyright restrictions exist, such as:
  1. The copyright is in the public domain because it has expired;
  2. The copyright was injected into the public domain for other reasons, such as failure to adhere to required formalities or conditions;
  3. The institution owns the copyright but is not interested in exercising control; or
  4. The institution has legal rights sufficient to authorize others to use the work without restrictions.

More information can be found at https://flickr.com/commons/usage/.

Please add additional copyright tags to this image if more specific information about copyright status can be determined. See Commons:Licensing for more information.
This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14753293091. It was reviewed on 20 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

20 September 2015

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current23:56, 19 September 2015Thumbnail for version as of 23:56, 19 September 20151,640 × 1,320 (682 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': bellsystem00technivol33amerrich ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fbellsy...

You cannot overwrite this file.

There are no pages that use this file.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:The_Bell_System_technical_journal_(1922)_(14753293091).jpg&oldid=610328467"