306 



Mr. Frederick Bedell on 



Fig. 5. — Primary Current Locus for Constant Potential Transformer 

 Determined Experimentally. 



Fig. 6. — Effect of the Variation of the External Secondary 

 Self-Tnduction in a Constant Current Transformer. 



Fig. 7 shows the effect of magnetic leakage. The curves 

 shown are loci for primary electromotive force, when the 

 primary current is I v The primary electromotive force is 

 composed of the components OH, to overcome ohmic resist- 

 ance and supply open-circuit losses, HJ to overcome self- 

 induction, and (with absence of magnetic leakage) JK to 

 overcome the back electromotive force of mutual induction. 



