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GDT4B

Information - Help 
ID = 34502
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Thyratron   Text 
Identical to GDT4B

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.75 Ampere / Indirect / Parallel, (AC/DC)
Description

Triode Thyratron, primarily intended as a time-base generator for television, up to 50kHz

Va <350; Ia <0.5A peak. Control ratio 45; Voltage drop 15-18.

 
Information source Wireless World (The), London (WW, 79)   Valve data 1956
Babani, International Radio Tube Encyclopaedia   p.305
History of the British Radio Valve to 1940
 
gdt4b_1.jpg
GDT4B: RFJ
Roy Johnson

 
gdt4b_sock.png
GDT4B: Universal Vade-Mecum, 1960
Anonymous 15 Collector

 

from Just Qvigstad


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