From: nick@lurcher.org   
      
   On 02/06/12 01:16, Phil Allison wrote:   
   > "GRe"   
   >>   
   >> BTW, maybe the only intended function of the circuit was to create a warm   
   >> up delay but in that case a waste product of the circuit is that it adds   
   >> tube rectifier impedance.   
   >   
   > ** The paralleled 6X4 plates act like a 150 ohm resistor - along with the 56   
   > ohm 5W plus the resistance in the transformer secondary of about 180 ohms.   
   > All helps to reduce the ripple voltage on the HT.   
   >   
   > But there is no sag under load as the current draw is constant.   
      
   Why would you assume the current draw is constant?   
      
   The power that drives the loudspeaker has to come from somewhere.   
      
   Just because a class A output stage constantly draws current, that   
   doesn't mean it draws constant current.   
      
   --   
   Nick   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)