826 



BELL SYSTEM TECHNICAL JOURNAL 



16 



5 

 < 10 



0.5 1.0 1.5 2.0 2.5 3.0 



PLATE CURRENT 



SCREEN CURRENT 



0.5 1.0 1.5 2.0 2.5 3.0 0.5 1.0 1.5 2.0 2.5 3.0 



PLATE POTENTIAL IN KILOVCLTS 



Fig. 6" ("lianictcristics of tlic 715.\ \-;Ki.iuni tulu'. 



base, and the |)latt' terminal out tin- top of the bulb. This provided a 

 very rigid structure which could stand extreme shock and vibration condi- 



i 



