c.iix or iiioif.iy ii-.i.i.riiosi'. kiweatf.ks 



2.\ 



amplitiiT, is amplituHl, and passt-d on llirmiuli llif ri-clifiiT :{ to tlir line 

 I'.ist. If llu' .implituT wtTi- loinpli-ti-ly distort ioiiU-ss and, tluTi-fort-, 

 rapabli- of antplifs inn direct riirri-nts .iiid tlu- ri-rtilii-rs ptrfi'it, that is, 

 olTcrinn zero resistance to currents in one direction and inl'inile resist- 



Fig. 7 



Fig 8 



ance to currents in the opposite direction, the currents transmitted 

 to the line east would have the \va\e shapes shown in Fig. S. 



As it would be impracticable to make llii' amplifier amplif\- the 

 direct-current component of the wave shown in I-"ig. 8 the amplifier 

 would tend to send out a wave somewhat like that shown in Fig. !», 



which is the wave of F'ig. 8 with the direct component removed. 

 The rectifier 3 then suppresses the negative half waves, finally per- 

 mitting the wave shown in Fig. 10 to pass to the line east. On account 



Fig. 10 



of the great distortion involved the c|uality of speech would be greatly 

 impaired if, indeed, the speech would not be rendered unintelligible. 



Assuming, however, that intelligible speech is possible in spite of 

 this distortion, the rectifiers would not prevent singing. Suppose the 

 repeater shown in Fig. 6 to be cut into the line shown in F"ig. 5 at R 

 and that waves are arriving from the line west. There are certain 



