THE GREAT MULLARD MAGIC BLOG
VALVE TYPES & MANUFACTURING TECHNIQUES (ii)
A filament current drain of 1A was a real problem and the search was on to achieve good electron emission from a reduced filament current. Early efforts were based on...
VALVE TYPES & MANUFACTURING TECHNIQUES (ii)
A filament current drain of 1A was a real problem and the search was on to achieve good electron emission from a reduced filament current. Early efforts were based on...