Antique radios, Old Time Radios
Negatron
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Country:
Great Britain (UK)
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| Identical to |
Negatron
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| Similar
Tubes |
Multiple differences or of other kind:
TWW
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| First Source
(s) |
1919 : Saga of the Vacuum Tube, Tyne page 395
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Sidecontact.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Direct / Battery = |
| Description |
This tube was designed by John Scott Taggart and made by Mullard in 1923. It was made for the Radio Communications Company for use in a special oscillator circuit devised to avoid using Marconi held patents. The tube has two plates and a single grid. The tube name is derived from the negative resistance obtained. A standard Mullard box of the period is shown on page 219 of "70 Years of radio Tubes and Valves" by John W Stokes but is poor quality. The tube picture is little better. Tyne in his "Saga of the vacuum Tube" (page 395) states that the tube was riginally developed in 1919 but was not announced until the patent had been granted.
Text in other
languages (may
differ)
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| Information source |
70 Years of Radiotubes and V. Page 219
Wireless World (The), London (WW, 79) September 1921, p. 21 & 22
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Negatron: UK-Pat. 166260
Wolfgang Holtmann
More ...
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Just Qvigstad
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Forum contributions about this tube
Negatron
Threads: 1 | Posts: 1
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Hits: 2514 Replies: 0
Negatron (Negatron)
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Dietmar Rudolph † 6.1.22
21.Dec.10
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1
Das Negatron kann als Vorläufer des Transitrons angesehen werden. Beide können einen negativen Widerstand des Typs "Dynatron" erzeugen, ohne daß dabei Sekundärelektronen beteiligt sind (wie bei den Dynatronkennlinien von Tetroden, wenn die Anodenspannung kleiner als die Schrimgitterspannung ist).
Eine Beschreibung von Scott-Taggart seines Negatrons findet man im Post "Negative Resistance Oscillators" #4.
MfG DR
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Negatron
End of forum contributions about this tube
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