   ()     VT1, VT2
   () 9-400 ;  VD3-VD7;
   ;    
   VT3;  VS   
  2,2. 1    15003 28169. 
   W2 (400  D 0.01)   .  
   W1a, W1 (no 10  D 0.5)     W
 (5  D 0.01). T2a (2)     400 
 8-10 , D 0.8 .   ,  
  w2a (w2),   800-1000   D 0.01   .
 w1  w1 (  10   D 1.0)  . 
     
 .  :    
  ,  () 
 P=U1*I1 (U1=9B, I1=1),     VD3-VD7
I2=C*U2/2Tp  VT1-VT2  I1=N1*I2. ,     
E=C*U2*U2/2,
   (1-10  )     
 U2=N1*U1,  N1=W2/W1.     = RpCp  
   =RC. R     I2=U2/R,
I1=N1l*I2.     
 2 (2) U=2n2*U2, n2=w2/w1.    w1 
   VS I=U2*(2C/L)^(1/2), L-  w1a
(w1),  -   2, 2 (50   ).
      VS.   
  .       . 

    (  )   1-3 .  VS 
VT3     ,  +9B   VD7.  
 2  2    20-100   .  
      W.  
    W,  R1, R2.  
       1.5-2.5
.
        .
         
       ,  
   .  ,    
  ,      .  
U.S. Consumer-Product Safety Commission   -  
      , 
  -      10 . 
  5     
 0.5    .  
       15 .

