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

25/450

Information - Help 
ID = 51656
       
Country:
Netherlands
Brand: Thermion; Lent (Nijmegen)
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 25/450
Similar Tubes
Normally replaceable-slightly different:
  F704 ; T730 ; W704
Other base:
  25/450_UX
Production stop Feb.1938
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.25 Ampere / Direct
Description

This is a tube from the Thermion Technica series of power amplifiers and power rectifiers.

 
Information source - - Manufacturers Literature   1-9-1935
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 138, p. 186
f704_so~~2.png 25/450: rtt
Anonymous 10 Collector

Just Qvigstad 		25450data.png
25/450: own collection
Peter den Boer
 
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