File:DeForest Pat 879532 Fig 1.png
From Wikimedia Commons, the free media repository
Jump to navigation
Jump to search
DeForest_Pat_879532_Fig_1.png (505 × 432 pixels, file size: 7 KB, MIME type: image/png)
File information
Structured data
Captions
Captions
Add a one-line explanation of what this file represents
Summary
[edit]DescriptionDeForest Pat 879532 Fig 1.png |
Deutsch: de Forest Audion Schaltung
English: Circuit of one of the first vacuum tube radio receivers, invented by Lee De Forest in 1907, the inventor of the first amplifying vacuum tube, the Audion, from his 1907 patent. This is a grid-leak receiver, using a single Audion tube which both amplifies the radio signal and rectifies it, extracting the modulation (audio signal) from the radio frequency carrier wave. |
Date | |
Source | US Patent 879532 Fig. 1 |
Author | Lee de Forest |
Licensing
[edit]Public domainPublic domainfalsefalse |
![]() |
This image is in the public domain according to German copyright law because it is part of a statute, ordinance, official decree or judgment (official work) issued by a German authority or court (§ 5 Abs.1 UrhG).
dansk ∙ Deutsch ∙ English ∙ español ∙ Esperanto ∙ français ∙ italiano ∙ Malti ∙ Nederlands ∙ polski ∙ sicilianu ∙ suomi ∙ svenska ∙ Tiếng Việt ∙ македонски ∙ русский ∙ українська ∙ বাংলা ∙ 日本語 ∙ 中文(简体) ∙ 中文(繁體) ∙ العربية ∙ +/− |
![]() |
Original upload log
[edit]Transferred from de.wikipedia to Commons by Wdwd using CommonsHelper.
The original description page was here. All following user names refer to de.wikipedia.
- 2010-01-22 23:22 AndreAdrian 505×432× (7120 bytes) {{Information |Beschreibung = de Forest Audion Schaltung |Quelle = US Patent 879532 Fig. 1 |Urheber = Lee de Forest |Datum = 1907 |Genehmigung = {{Bild-PD-Amtliches Werk}} |Andere Versionen = |Anmerkungen = }}
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:31, 28 June 2011 | ![]() | 505 × 432 (7 KB) | File Upload Bot (Magnus Manske) (talk | contribs) | {{BotMoveToCommons|de.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{de|de Forest Audion Schaltung}} |Source=Transferred from [http://de.wikipedia.org de.wikipedia]; transferr |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.