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

CY21

Information - Help 
ID = 31600
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
  Late but no serial production. For instance only development samples. *****
Identical to CY21
Predecessor Tubes CY1   CY2  
Successor Tubes 1941   UY21  

Base Loctal-9-Pin (B9G)
Filament Vf 25 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description

The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania.

 
Text in other languages (may differ)
Information source - - Manufacturers Literature   

cy21_9b_r.png CY21: original Philips documents
Jacob Roschy

More ...

Just Qvigstad
cy21_9d44_1.png
CY21: original Philips documents
Jacob Roschy

Collection of

 
ablz21_9otl_3.png

 

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]
  

Data Compliance More Information