862 THE BELL SYSTEM TECHNICAL JOURNAL, JULY 1956 



10 



>° 



o 



en 

 < 



CO 



o 



-10 



Si 



RELATIVE HARMONIC CURRENT 



,2 ND 



rK \ ,ST 



CALCULATED 

 1ST 





x-^ 



srd'^-^ 



V6 

 \ 



X 



-30 -20 - 10 10 



RELATIVE INPUT LEVEL IN DB FROM SATURATION DRIVE 



Fig. 13 —^Curves of output level, fourier component amplitudes of beam cur-ij 

 rent, and peak velocity as a function of input level for low space charge. These-: 

 curves were deduced from Fig. 8 (a). j 



0.6 



Fig. 14 — Maximum velocity reduction as a function of space charge (from Fig. J 

 8). The velocity reduction is about 3.5 iji . i 



