File:Original Abraham-Bloch multivibrator circuit.png

From Vigyanwiki

Original file ‎(1,360 × 952 pixels, file size: 195 KB, MIME type: image/png)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

This section is not coming and in 2000 2007 into imo and contacts masons lessons of mine and number in speak and speak and international problem of company naka it is no coming 333 111. 128+38.3=56886

Inspector

Description
English: The first astable multivibrator circuit, invented by French engineers Henri Abraham and Eugene Bloch, from their 1919 paper. The Abraham-Bloch multivibrator, built with triode vacuum tubes, was the first relaxation oscillator circuit, and the predecessor of the Eccles-Jordan flip-flop widely used in modern digital logic. Abraham called the cross coupled-oscillator a multivibrateur because its square-wave output was rich in harmonic frequencies, unlike the existing sine wave oscillators.
The text gives the component values as R1 = R2 = 50 kΩ, r1 = r2 = 75 kΩ, C1 and C2 are 8 pF adjustables. The circuit could oscillate at frequencies up to 50 kHz.
Date
Source Retrieved February 4, 2014 from Richard Glazebrook 1922 A Dictionary of Applied Physics, Vol. 2: Electricity, MacMillan and Co., New York, p. 633, fig. 8 on Google Books. Credited in source to to H. Abraham, Comptes Rendus, Vol. 168, 1919, p. 1105
Author Henri Abraham

Licensing

Public domain
Public domain
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.
United States
United States
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.

Captions

Add a one-line explanation of what this file represents
Inspector and this section 2007

Items portrayed in this file

depicts

oscillator

File history

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

Date/TimeThumbnailDimensionsUserComment
current22:24, 13 July 2019Thumbnail for version as of 22:24, 13 July 20191,360 × 952 (195 KB)wikimediacommons>Dicklyonbetter grab from the same source, cleaned up a little

The following page uses this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitise it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from ‘https://www.vigyanwiki.in/wiki/File:Original_Abraham-Bloch_multivibrator_circuit.png’