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UX874

Information - Help 
ID = 29213
       
Country:
United States of America (USA)
Brand: RCA (RCA Victor Co. Inc.); New York (NY)
Developer: General Electric for Brand RCA-Radiotron; Bridgeport CT, Syracuse NY 
Tube type:  Voltage Regulator, single   Power-supply 
Identical to UX874 = CX374
Similar Tubes
Other shape (e.g. bulb type):
  874
Normally replaceable-slightly different:
  PT-874 ; R_Raytheon

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament
Description Late in 1924 experiments began at the Westinghouse laboratories on designing a neon gas voltage regulator tube. Work started on development of this tube in March 1925. the tube became available in the following year but it was plagued with difficulties. Research into these problems was transferred to the GE laboratories in March 1927. It was not used in any great extent commercially. The cylinder element was connected to one base filament pin and the other element was connected to the grid pin. With this connection, the battery eliminator cannot be turned on until the tube is inserted in the socket.

Voltage regulator 90 Volt (ignition 125 V), 10 - 50 mA,

 
Dimensions (WHD)
incl. pins / tip
x 137 x 54 mm / x 5.39 x 2.13 inch
Weight 69 g / 2.43 oz
Information source - - Manufacturers Literature   Early Tube Development at GE 1929
  usa_rca_ux_874_ckt.png
  UX874: Mfg. data sheet
Jay Kinnard
 
100_1611_copiar_custom.jpg
UX874: Carlos Pieroni García
Carlos A. Pieroni-García

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ux874.png
UX874: own collection
Peter den Boer

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from Just Qvigstad

Usage in Models 2= 1925 ; 1= 1926 ; 1= 1927? ; 3= 1927 ; 2= 1929?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):9


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