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UR1

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ID = 8291
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to UR1 = CY1
Similar Tubes
Other base:
  UR1C
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)

Base Europe side contact P8A (Au P, 8SC) (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 20 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Information source History of the British Radio Valve to 1940   p. 150 & 176
Babani, International Radio Tube Encyclopaedia   p. 290 & 291
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

ur1_so.png UR1: rtt
Anonymous 10 Collector


Just Qvigstad
Usage in Models 2= 1931 ; 2= 1933? ; 8= 1934 ; 1= 1935? ; 12= 1935 ; 1= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):26

Collection of

Collection of a member from D
 
ur1_2.jpg

UR1
 

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