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DeForest Audion Detector (1916)
http://earlyradiohistory.us/1916det.htm
DeForest Audion Detector Type RJ9 The essential principle of this instrument is that the control for the "B" battery is a potentiometer control, giving very close regulation of the "B" battery potential. The switch controlling the filament brilliancy automatically cuts the "B" battery off from the potentiometer when the filament is turned "off."
Audion Detector Professional Type mod-pre26 DeForest Radio
https://www.radiomuseum.org/r/deforest_audion_detector_professio.html
The DeForest Radio and Telegraph Co. Audion Detector was provided with two dual filament super-sensitive Audion Bulbs. May have been advertised in a …
Audion Detector RJ 8 mod-pre26 DeForest Radio Telephone ...
https://www.radiomuseum.org/r/deforest_audion_detector_rj_8.html
Tablemodel, Box - most often with Lid (NOT slant panel). Dimensions (WHD) 13.75 x 6.25 x 0 inch / 349 x 159 x 0 mm. Notes. The De Forest Audion Detector Type RJ 8 was a finished version of the RJ 9 with an oak cabinet. Price in first year of sale. 25.00 $. Literature/Schematics (1) 1916 Clapp-Eastham catalog X page 31.
Audion Vacuum Tube - History Computer
https://history-computer.com/the-audion-vacuum-tube/
De Forest’s Audion, on the other hand, differs from a real vacuum triode in that it lacks linear amplification, not to mention the semiconductor transistor, which is a fundamental component of every electronic computer. As a result, Lee de Forest regarded his triode as little more than a more sensitive diode detector.
Build De Forest's Audion Detector. - Angelfire
http://www.angelfire.com/electronic/funwithtubes/Build_an_Audion.html
Build De Forest's Audion Detector. Yes, you can duplicate the original experiments of Lee De Forest without blowing your own glass bulb. The matter of who built the first vacuum tube is in considerable international dispute. The British have their man, Fleming, the Russians theirs and likely China has a claim as well.
Antique Radio Classified: DeForest Detectors RJ4 and RJ5
http://www.antiqueradio.com/deforest_detect_5-97.html
THE deFOREST AUDION DETECTOR IMPROVED TYPE RJ4. Licensed for Private Use Only. This instrument represents the highest development of wireless detecting apparatus known to science. Tests conducted by the United States Bureau of Standards have shown it to be fully 50 per cent. more sensitive than any other form of detector (Bulletin, Bureau of ...
DeForest Album - Society of Wireless Pioneers
https://www.sowp.org/deforest-album/
DeForest RJ5 Audion Detector – $25. DeForest RJ Type Wavemeter – $65 with telephone receiver. DeForest Single Audion Receiver. DeForest Special Receiving Tuner and Audion Detector. DeForest Standard 3-Step Audion Amplifier – $500. DeForest UL-2 Audion Amplifier – $200. DeForest “VD 3-1/2” Variable Condenser – $35 plus $5 for ...
Antique Radio Forums • View topic - DeForest Ultra Audion ...
https://antiqueradios.com/forums/viewtopic.php?t=398785&start=0
DeForest Ultra Audion Amp & Siren Seriel #11 Detector Tuner Sold: $12,000. Is anyone able to offer any additional information on this piece? ... A partial explanation of this "siren" effect has been given by De Forest,' but the present paper is not concerned further than to note that it must be strictly avoided in beat-tone reception. After ...
Autodyne - Unionpedia, the concept map
https://en.unionpedia.org/Autodyne
18 relations: Arc converter, Audion, Beep (sound), Columbia University, Crystal detector, Direct-conversion receiver, Edwin Howard Armstrong, Frequency mixer, Great Depression, Heterodyne, Lee de Forest, Morse code, Oscillation, Regenerative circuit, Spark-gap transmitter, Superheterodyne receiver, Tikker, Vacuum tube. Arc converter. The arc converter, sometimes …
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