From: phil_a@tpg.com.au   
      
   "John Lunatic Stewart"   
   >   
   > Ever wonder how you could make accurate measurements of small   
   > resistance's common in audio or power transformer windings? An ordinary   
   > Volt-Ohm-Meter (VOM) or Digital Multimeter (DMM) does a poor job.   
      
      
   ** All you need is a 3.5 digit DMM and a 2.2 ohm WW 5 watt resistor PLUS  a   
   regulated, adjustable voltage PSU capable of 1 amp DC. Connect the 2.2 ohm   
   resistor and winding in series and energise the pair with the bench PSU  -   
   set the voltage to about 2 volts.   
      
   The ratio of voltages across the winding and the resistor will be the same   
   as the ratio of their resistances.   
      
   5th grade math will suffice -  and a pocket calculator.   
      
      
   ....  Phil   
      
      
      
   ....  Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)