From: phil_a@tpg.com.au   
      
   "MarkS"   
      
   > being an Ampex 351...now there's a combination you don't see everyday.   
   >   
   > Anyway, here is a link to the schematic for those interested in the   
   > "sliding bias" circuit:   
   >   
   > http://ampslab.com/vintage_brook10c.htm   
      
      
   ** The diode in the low voltage supply looks like it is drawn back to front.   
      
        Be a positive supply as shown.   
      
        Voltages are missing too.   
      
      
      
   ....  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)