56 



BELL SYSTEM TECHNICAL JOURNAL 



MICROSECONDS 



Fig. 26 — Start of "A" transient (voltage). 



+200L 



MICROSECONDS 



Fig. 27 — Start of stable glow discharge of "A" transient (voltage). 



2 

 < 



4 6 



MICROSECONDS 



Fig. 28 — Start of "A" transient (current). 



