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Mesco_Rectifier

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ID = 85704
       
Country:
United States of America (USA)
Brand: Manhattan Electrical Supply Co. Inc. (Mesco); New York, NY
Tube type:  RECTIFIER TUBE (Detail uncertain) 
  Ca. 1925 up to 1945 very rare. ***
Identical to Mesco_Rectifier

Base Soffit
Filament --/--
Description

This seldom seen rectifier is unique in size, shape and electrical contact. Patent 1,706,135 filed Oct. 7, 1925, issued Mar 19, 1929 to Lewis S. Baker, assignor to Manhattan Electrical Suppy Co, New York. It has a hemispherical aluminum cathode and a carbon anode, with low pressure neon gas for ionization. Patent says hydrogen could also be used but is not as readily ionized, or high vacuum could be used at much higher voltage. No operating parameters are given.

 
Dimensions (WHD)
incl. pins / tip
76 x 140 x mm / 2.99 x 5.51 x inch
Information source -- Collector info (Sammler)   

Collection of


Documents about this component
  US Patentschrift auf der diese Röhre basiert 359 KB
 
screenshot_20230116_191925_gallery.jpg

 

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