From: peterxpercival@hotmail.com   
      
   Pimpom wrote:   
   > On 4/9/2020 10:17 PM, Peter Percival wrote:   
   >> Ralph Mowery wrote:   
   >>> In article , peterxpercival@hotmail.com   
   >>> says...   
   >>>>   
   >>>> I wish to buy a power supply delivering up to 500V for experiments with   
   >>>> thermionic valves.  What would be a suitable current?   
   >>>>   
   >>>>   
   >>>   
   >>> It would be helpful if you would list some of the valves numbers and how   
   >>   
   >> Not yet decided!  Bog standard AF triodes, probably.   
   >>   
   >   
   >  > I'd love to.  Please point me in the direction of a circuit   
   >  > diagram.   
   >   
   > Maybe you'd like to try this. I used it many many moons ago -   
   > https://www.dropbox.com/s/9dl0o7z33jiqhft/Tube%20preamp%20powe   
   %20supply.png?dl=0   
   >   
   Thank you.  I'll feed it from a Variac (I have a Bronson) as Phil   
   Allison suggested.   
      
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