THE OPERATION OF VACUUM TUBES 



35 



2000 



30 60 90 120 150 180 210 240 270 300 330 360 



DEGREES 



Fig. 5 — A. First four components of z'o, Fig. 45. B. Alternating components of plate 

 voltage produced by z'o in output circuit. 



For any constant value of grid voltage, the plate current will be 

 some function of the plate voltage, so that for any peak value of Cg we 

 may write 



e,™ =/(/,). (8) 



