00fb8cf5   
   From: phil_a@tpg.com.au   
      
   "Engineer"   
    "Phil Allison"   
   > "Engineer"   
   >   
   > > I had a physically large vintage 300-0-300 VAC Hammond power   
   > > transformer, along with some other decent used "iron", that I wanted   
   > > to use in my home-brew "Scratch 20" mono amplifier ("Scratch" means   
   > > all out of the spares or scrap box, "20" is the targeted rms watts   
   > > out.) However, the B+ at about 320 VDC was too low for cathode biased   
   > > 6L6 output tubes with a 5U4 rectifier. I did not want to use s/s B+   
   > > rectification as I like to see the glowing tubes... why else build   
   > > these things?! I needed a cheap B+ boost rather than a new PT!   
   >   
   > ** No 5AR4s in your junk box ??   
   >   
   > Would get you another 40-50 volts DC.   
   >   
      
   Phil, yes, a few... but for now I want to use a 5U4.  Then I can keep   
   the over-valued 5AR4's for my pension plan!   
      
      
   ** Nothing stops you using a 5U4 and fitting diodes.   
      
      The tube does nothing but still looks cool.   
      
      
   ....  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)