radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

AC/DD

Information - Help 
ID = 6562
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Double Diode   Detector 
Identical to AC/DD
Similar Tubes
Normally replaceable-slightly different:
  2D4A
Other base:
  AC/DD_7pin
First Source (s)
1934 : History of the British Radio Valve to 1940 p. 139 & 177

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description

Detector and AVC use.

Hivac and Mazda are known brands.

Hivac also produced a 7 pin version.

 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 73, p. 100
Babani, International Radio Tube Encyclopaedia   p. 46 & 47
Taschenbuch zum Röhren-Codex 1948/49
 
ac_dd_mazda.jpg
AC/DD: R.O.
Rudolf Osterkamp

 
acdd_so.png
AC/DD: Austausch Röhren Lexikon, 1947
Anonymous 10 Collector

 
acdd.png
AC/DD: own collection
Peter den Boer

More ...

from Just Qvigstad

Usage in Models 1= 1932 ; 1= 1934?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg