File:Soviet 'Sezam' intercom speaker, early 1990s (2).jpg

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

Original file ‎(3,595 × 2,396 pixels, file size: 2.54 MB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents

Summary

[edit]
Description
Русский: Сoветский/российский квартирный блок домофона "Сезам". Примитивный симплексный телефонный приемопередатчик, он же "активная колонка" (на редкость крикливая! мертвого разбудит). Два германиевых транзистора + выходной трансформатор. Годы производства компонентов 1990..1992.
English: Soviet/Russian 'Sezam' door phone (intercom). This is a primitive simplex telephone, with two germanium transistors transformer-coupled to the speaker (which serves as a microphone in send mode). The "active speaker" is surprisingly loud for its size. Parts made in 1990...1992.
Date
Source Own work
Author Retired electrician

Licensing

[edit]
I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero 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.

File history

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

Date/TimeThumbnailDimensionsUserComment
current17:10, 7 April 2021Thumbnail for version as of 17:10, 7 April 20213,595 × 2,396 (2.54 MB)Retired electrician (talk | contribs){{Information |Description={{ru|Сoветский/российский квартирный блок домофона "Сезам". Примитивный симплексный телефонный приемопередатчик, он же "активная колонка" (на редкость крикливая! мертвого разбудит). Два германиевых транзистора + выходной трансформатор. Годы производства компонентов 1990..1992. }} {{en|Soviet/Russian 'Sezam' door phone (intercom). This is a primitive simplex telephone, with two germanium transistors transformer-coupled to the speaker (which serves as a microphone in...

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Soviet_%27Sezam%27_intercom_speaker,_early_1990s_(2).jpg&oldid=854362390"