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4621_WLS

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ID = 67160
       
Country:
United States of America (USA)
Brand:
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Full-Wave Cold-cathode-rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to 4621_WLS
Similar Tubes
Normally replaceable-slightly different:
  BH

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament
Description

Page 671 of the Fall 1928 issue of the Sears Roebuck catalog lists the 4621 as equivalent to the BH cold cathode rectifier tube which was used in battery eliminators for radio receivers. It handles high peak currents of 80 to 90 ma (up to 125 ma with a maximum peak plate current of 400 volts) output - but needs proper elimination of RF noise by proper shielding and filtering. The BH was made by the Raytheon Manufacturing Co of Cambridge, Massachusetts. The tube is also listed on page 711 of the Spring 1929 catalog.

 
Information source Tube Lore (I)   page 16.
Sears, Roebuck Catalogs (Silvertone)   Page 671 Fall 1928 issue
 
wls_4621_front.jpg
4621_WLS: Picture from Rod Clay
David Erali

 
raytheon_b_ba_bh~~1.png
4621_WLS: Fin Stewart
Fin Stewart

 

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