[sdiy] What is this??

[Donald Tillman]

   > Hi list, i've had this thing for a while and i really
   > wonder what it is;
   >
   > www.sdiy.org/knas/temp/stuff3.jpg
   > www.sdiy.org/knas/temp/stuff2.jpg
   > www.sdiy.org/knas/temp/stuff1.jpg
   >
   > It came out of an old tek-scope i think. It looks like
   > it's some kind of tuneable inductor bridge, all of
   > them are connected together..

Get a copy of the book "The Art and Science of Analog Circuit Design"
by Jim Williams, and see chapter 10, "Who Wakes the Bugler?" by Carl
Battjes.  All is explained.

  -- Don

-- 
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com