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ORP52

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ID = 31288
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Tube type:  Photo resistor 
Identical to ORP52

Base Wires only.
Filament
Description

Photoconductive Cell

 
Information source - - Manufacturers Literature   

orp52_01.png
ORP52: Manufacturer's Literature
Emilio Ciardiello

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