Radio-Katalog, Röhren, Halbleiter etc.
DU4
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Land:
Grossbritannien (UK)
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| Identisch mit |
DU4
= 505
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| Ähnliche |
Austauschbar, kleine Unterschiede mögl.
SW1
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| Erste
Serie |
22.Nov.1935
Wireless World (The), London (WW, 79)
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| Sockel |
Europasockel 3-Stift B3 (Eu H) (Codex=Eo)
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| Anwender |
Radio/TV-Empfang etc. |
| Heizung |
Uf 4 Volt / If 1 Ampere / Direkt / Spezifizierte Spannung ~ = |
| Beschreibung |
Va<500 rms at Ia <60mA mean.
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| Literatur |
History of the British Radio Valve to 1940 p. 149 & 169
- - Manufacturers Literature
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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DU4: rtt
Anonym 10 Sammler
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Just Qvigstad
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Forumsbeiträge zur Röhre
DU4
Threads: 1 | Posts: 2
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Klicks: 4348 Antworten: 1
DU4 (DU4)
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Stuart Irwin
03.Mar.10
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1
Hello All,
I notice that the photos for this tube are misplaced. The DU4 is a rectifier made by Mullard and I believe is the equivalent of the Philips 506. The photos show a De Forest tube, probably a triode.
Regards,
Stuart
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Ernst Erb
03.Mar.10
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2
Dear Stuart
How right you are! Thank you. DeForest made a couple of DV tubes and I can imagine that the V was read as an U. I moved the pictures to the DV4. I hope the DV4 is really a triode. I could not find any evidence about the DV4.
Now we miss a photo for the DU4 ... which is supposed to be a 505 (not 506).
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DU4
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