350 



Mr. T. H. Blakesley's Further 



The Case of a Machine playing into a Number of Parallel 

 Transformers. 



Let E be the E.M.F. of the machine (including all induction); 

 R its resistance ; 



/the P.D. where the circuits become parallel ; 

 r the resistance of the primary from this point ; 

 m the number of turns in the primary coil ; 

 n the number of turns in the secondary coil ; 

 p the resistance of the secondary coil. 

 C is the current through the generator ; 

 c is the current in the primary; 

 7 is the current in the secondary; 

 N the number of magnetic lines in the core. 



Numerical subscripts must be applied where required for 

 the various circuits. 

 Then 



1 



E-/=CB, 



at I m y 



E = CR4-^ + - 7/J ; 



11 dt 



yp, 



J 



J 



multiplying /bye, 



fi 



m 



tfr + p — ye, 



n"™ 



which gives the power in each transformer circuit, and indi- 

 cates the appropriate positions of the two instruments, viz. 

 one with both coils in the primary, and one split between the 

 primary and the secondary. 



