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506K

Information - Help 
ID = 3305
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 506K
Similar Tubes
Other shape (e.g. bulb type):
  506
Heater different:
  2506
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
Predecessor Tubes 2506  
Successor Tubes 1932   1805  

Base Europe 4-Pin (A, 4A, B4, since 1914)
Filament Vf 4 Volts / If 1 Ampere / Direct
Description

K means "kort" = dutch for "short".
506K is ca. 20mm shorter than the normal 506.
Only this version fits into the Philips Radio Model 2514.

 
Text in other languages (may differ)
Literature Taschenbuch zum Röhren-Codex 1951   Fehler: Daten der 509 angegeben!
Babani, International Radio Tube Encyclopaedia
  506k.png
  506K: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
John Hupse
 
506k.jpg
506K: Philips 506K, 1930
John Hupse

 
506k.png
506K: Telefunken Werkstattbuch
John Hupse

 

Usage in Models 2= 1928 ; 1= 1929?? ; 5= 1929 ; 1= 1930?? ; 6= 1930? ; 6= 1930 ; 2= 1931? ; 2= 1931 ; 1= 1935?? ; 1= 1935 ; 1= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):28


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