  
  ,     , 
        
  .     
.. [1],        . 

  1930  ..    .  , 
            
.     ...     , 
    ,    
 ,     , .1. 

 

,     ...,   ...  
 . : "...     
       
 (  2w)     
 ,      w     
   ." 
 
 3  .2   ,     
  .       
 4,    .2.   -  , 
    . 

,     ,    ,    
,  .        
  ...,       . 
   ,    , 
      (). 
      ,   
    ,    
 .    ,    
   ,  ,     L2 
,          
   .       
   ,       
  . 

  ,        ( 
 )  ? ,    , 
     L3      
 .      L3  
 ,     ...  L2.   
    ,   
 L1/L2  ,  12/220 V.    
 ""  L3? : 1.  1  10  10 
 P=0.000001x100x0.5x10000=0.5W 2.  1  100 
 10  P=0.000001x10000x0.5x10000=50W 3. 
 1  200.  20. 
 P=0.000001x40000x0.5x20000=400W 4. 
 10  200.  20. 
 P=0.00001x40000x0.5x20000=4KW 

,       ,  
   . 

: 
1. ..,  ,    .. , 
   , 1948 . 

   
Faraday Lab Ltd 
http://www.faraday.ru 
St.-Petersburg  2007 
  
  
  
  
  
  
  
  
