From: liz@poppyrecords.invalid.invalid   
      
    wrote:   
      
   > A variable power adapter is required to drive a 6 V, 30 W incandescent   
   > bulb in a microscope.   
   >   
   > Similar to the 3-12 V 5 A adapter here.   
   > https://www.ebay.ca/itm/305207182573   
   > An adapter providing 1.5-6 V output would be better but I haven't   
   > found one.   
   >   
   > Rather than limit the adjustment to 6 V, I think of halving the   
   > output.  An integrated circuit in a 4 port package is conceivable.   
   > https://www.youtube.com/watch?v=VJfqBQ2ybpk   
   >   
   > Does the marketplace offer a solution?   
   > Another idea?   
      
   A 6v transformer and an adjustable resistor made from an old electric   
   fire bar and two jubilee clips?   
      
      
   --   
   ~ Liz Tuddenham ~   
   (Remove the ".invalid"s and add ".co.uk" to reply)   
   www.poppyrecords.co.uk   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)