radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

857B

Information - Help 
ID = 6868
       
Country:
Worldwide
Brand:
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Half-Wave Mercury-Vapor Rectifier   Power-supply 
Identical to 857B = 38157B
Predecessor Tubes 857A  

Base Wires Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 5 Volts / If 30 Ampere / Direct
Description

Improved version of 857A. GT56 spherical-tubular bulb, flying leads at bottom. Oxide coated filament, with heater current reduced to 30A. 22KV PIV, 10A average with forced air cooling; 14V typical voltage drop.
GE, Hytron, RCA, Westinghouse, but also Marconi Italy, among known manufacturers.

 
Dimensions (WHD)
incl. pins / tip
x 495 x 183 mm / x 19.49 x 7.20 inch
Weight 1650 g / 58.20 oz
Information source Tube Lore (II)   p. 79
- - Manufacturers Literature   
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49

857b_so.png 857B
Anonymous 10 Collector

857b_g100a_1.png
857B: Manufacturer's Literature
Emilio Ciardiello

More ...

Collection of

 
857b.jpg

857B
 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg