Radio-Katalog, Röhren, Halbleiter etc.
QP22A
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Land:
Grossbritannien (UK)
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| Identisch mit |
QP22A
= BLL32
= K77A
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| Erste Quelle(n) |
1935 : -- Original-techn. papers.
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| Sockel |
B9 Britischer 9-Stift (br) (Codex=Yx)
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| Anwender |
Radio/TV-Empfang etc. |
| Heizung |
Uf 2 Volt / If 0.45 Ampere / Direkt / Batterieheizung = |
| Beschreibung |
Announced in the 1935 Data book of Mullard.
Each section of the valves are graded with the letters P,Q,R,S, or T. etched on the glass above pins 2 and 7 which identify the two halves. This enables screen voltages in the range 103.5 to 133.5 to be selected to achieve a balance between the two sections without the need to measure the anode currents.
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| Literatur |
History of the British Radio Valve to 1940 p. 142 & 188
- - Manufacturers Literature Mullard 1935
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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| Tube Tester Data |
Avo CT160 |
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QP22A: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad
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QP22A: Mullard Valves 1936
Peter Hoddow
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Anzahl Modelle bei Radiomuseum.org
bestückt:3
Sammlung von
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| Datenkonformität |
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