PIERCE. — THEORY OF COUPLED CIRCUITS. 



315 



Equation (47) holds only when t^ = rjitu; that is, i)/V = RJU- In 

 this case also Uopt = ^' op< = *J- 



Computation and Discussion of Case I. In the above paragraphs 

 the equations have been derived for the current developed in Circuit 



TABLE IV. 



Given r = .30 

 % = .01 



7?4 = .01 

 I Ymax max) 



t2 = .09 

 — = 900 



% -ni 



( 



4 V'73'74 / 



225(^- - 1)- + 1 



1 



/ t2 



I Aik-niA,/ - 1 



1 ± .3 k 



IV for any adjustment of this circuit, while Circuit III is kept at its 

 optimum value. This corresponds to keeping the antenna circuit of a 

 wireless telegraph station set at its best value for given conditions and 

 tuning the system by variation of Circuit IV. Assuming any given 

 constants of the two circuits and any given wave length of incident 

 waves, we can now make computations which will give the shape 



