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5B/256M

Information - Hilfe 
ID = 29768
       
Land:
Grossbritannien (UK)
Marke: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Typ:  Strahlbündel-Endröhre   Strahlbündel 
Identisch mit 5B/256M = CV499

Sockel Loktal-8-Schlüsselröhre, B8G (USA 1938)
Heizung Uf 19 Volt / If 0.3 Ampere / Indirekt / Spezifizierte Spannung ~ =
Beschreibung This is one of a range of reliable beam power tubes from STC. The 5B/254G, 5B/254M (CV428), 5B/255M (CV391), 5B/256M (CV499), 5B/257M (CV2220), 5B/258M (CV2347), were developed from the 5B/250A (807)with similar characteristics to the 807. The range comprises single and double-ended and wire terminated versions and were widely used in military and civilian equipments for both audio and radio frequency applications up to 125 MHz.
Total anode and screen dissipation <25W.
Power outputs from a pair at 60 MHz class C can achieve 40W with anode voltages of 600. At audio frequencies a pair in class AB2 can achieve 80W rms. 
Literatur -- Original-techn. papers.   
Tube Tester Data Avo CT160

5b254m_5.png 5B/256M: Datenblatt
Wolfgang Bauer


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