Disadvantages of solid state media (was Re: Advantages...)

27 Apr 2012

...
   [1] Vff = 6.3V
nearly always implies an indrectly-heated cathode,  
 so the
 polarity and whether it's AC or DC make very little difference.  
 The datasheet specifies AC.

Yes, but AFAIK it doesn't specify if this supply has to be floating, 
centre-tapped to ground, or whatever. That implies to me an isolated 
filament heating a separate cathode. So I can't see why AC is essential.

-tony

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Disadvantages of solid state media (was Re: Advantages...)