XPost: sci.electronics.design, sci.electronics.equipment, sci.el   
   ctronics.repair   
   XPost: rec.crafts.metalworking, rec.woodworking   
   From: invalid@invalid.net   
      
   Imagine you are asked to install a used buck-boost transformer. Imagine you   
   could normally do this in a few minutes. Except if the leads were cut short   
   such that identifying characters on the leads' insulation were missing.   
      
   Identifying 2 leads belonging to any one winding is straightforward ohm meter   
   work. Maybe use of a ESR meter might help separate the X windings from the H   
   windings?. But identifying which specific winding is which and which end is   
   which­­not so straightforward. For me.   
      
   How would you go about identifying the windings? Maybe use a Variac to input   
   voltage to each of the windings then measure the output of the others? What   
   outputs should I expect at, for example, the H3/H4 winding with a voltage on   
   H1/H2 winding? How to identify backward connection of a winding?   
      
   Are the two H windings identical? The two X windings?   
      
   Suggestions welcome.   
      
   This is a 208 -> 230 (ie, 12 & 24 v buck-boost voltage) single-phase   
   autotransformer in N. America.   
      
   Thanks.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)