KENNELLY. — EQUIVALENT CIRCUITS OF COMPOSITE LINES. 63 



Equivalent U. Second Method. 

 The alternative method gives 



Equivalent T. 



To arrive at the equivalent T of a composite line loaded with a ter- 

 minal impedance, all that is necessary is to find the T of the same line 

 unloaded, by preceding formulas, and then to add the terminal impe- 

 dance to the proper line-branch of this T. 



a« ££ ££ — »F HOT" 



loo" A BC DE 



B 'oo" n DE 



i i 



BO D ^oo- E 



-F 48.619-T* 

 -E 453*6- 5* 



^ SE-F^wUf W v 



Figure 11. Diagram showing the influence of the location of an impedance 

 load on the receiving-end resistance of a three-section composite line. 



Influence of Location of an Impedance Load on the Receiving- 

 End Impedance of a Composite Line. 



It has been shown in a preceding paper that if a single smooth uni- 

 form line is terminally loaded with a given impedance, the change in 

 the receiving-end impedance due to the load is the same, whichever 

 end of the line the load may be applied to ; i. e., whether the load is 

 applied at the sending or at the receiving end. In the case of a com- 

 posite line, however, this proposition generally fails. The effect of a 

 resistance coil of 100 ohms on the receiving-end resistance of the three- 

 section composite line above discussed, is shown in Figure 11. With- 



