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501

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ID = 18043
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 501 = WE22_Rectron
Base Europe 3-Pin B3 (Eu H)
Was used by Radio/TV-reception etc.
Filament
Description

This tube is not listed on either page 3 or 4 of the Philips Type Number Book (radios, rectifiers and ballast tubes). The light bulb catalog no 743E, November 1923, lists the 501 as a "canopy" for the alabasta bulb. (Note; It has been confirmed by Philips that type numbers for both bulbs and tubes were alotted in sequence in the 1920's, as a product was developed, regardless of it being either a bulb, tube, or radio. "Doubling up" with type numbers appears to have occurred at least twice.

 
Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   
Ballast-Tube Handbook; Jacobi 1985   
-- Collector info (Sammler)
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
we22ff_rectron_1~~1.gif 501: Fin Stewart
Fin Stewart

Just Qvigstad
Usage in Models 1= 1932?? ; 1= 1936 ; 1= 1950??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
 
Forum contributions about this tube
501
Threads: 1 | Posts: 2
Hits: 2052     Replies: 1
501 (501)
Tomasz Szczesniak
08.Mar.15 		  1
501 (501) 

Attached photo does not match tube description, this is AC heated triode, some clone of Mc Cullough Kellog tube.
Otmar Jung
08.Mar.15 		  2
501 

That's right, the photos belong to the tube 501_Sovereign.
 
501
End of forum contributions about this tube
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