This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help.
English: Single vacuum tube Armstrong regenerative receiver circuit, invented in 1913 by American engineer Edwin Armstrong when he was a 22 year old college student. It was widely used until the 1930s when it was replaced by TRF and superheterodyne receivers. In the regenerative receiver, the gain of the tube is increased by feeding back some of the energy from the output plate circuit into the input grid circuit. In the Armstrong circuit this is done by the "tickler coil" (L3).
Date
Source
Own work
Author
Chetvorno
SVG development
InfoField
The SVG code is valid.
This diagram was created with Inkscape, or with something else.
This diagram uses translateable embedded text.
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Captions
Circuit of an Armstrong regenerative radio receiver
Items portrayed in this file
depicts
copyright status
copyrighted, dedicated to the public domain by copyright holder
copyright license
Creative Commons CC0 License
inception
25 January 2016
source of file
original creation by uploader
media type
image/svg+xml
checksum
0762e30b5a6feb03df531e394799f7a3535a933c
determination method: SHA-1
data size
48,243 byte
height
552 pixel
width
995 pixel
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time
Thumbnail
Dimensions
User
Comment
current
02:30, 9 May 2017
995 × 552 (47 KB)
Chetvorno
Replaced invalid Inkscape SVG with "plain SVG" version that validates
05:05, 18 April 2017
995 × 552 (62 KB)
Chetvorno
Improved a few labels
01:06, 28 January 2016
995 × 552 (62 KB)
Chetvorno
Tweaked location of labels
18:05, 25 January 2016
995 × 552 (60 KB)
Chetvorno
User created page with UploadWizard
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):