MAGNETIC GENERATION OF A GROUP OF HARMONICS 



441 



Fig. 3— Carrier supply unit, furnishing twelve harmonics of 4 kc. 

 (experimental model). 



of 4 db at the 3d and 35th harmonics, and 11 db at the fundamental 

 and the 61st harmonic. The variation of harmonic output with 

 change of ampHfier plate potential is given for the two harmonics 

 indicated in Fig. 4&. Figure 4c shows the 104 kc. output as a function 

 of the 4 kc. input. Arrows are used to indicate normal operating 

 points. The input amplifier is operated in an overloaded state so that 

 beyond a critical input, the fundamental output of the amplifier and 



