476 



BELL SYSTEM TECHNICAL JOURNAL 



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INTEGRATION CONSTANT /F 



Fig 5 — Relative input capacitance of an idealized space charge grid tube for different 

 space charge conditions (voltage ratio <p = 0.25). 



z -12 



■20 







""0 2 4 6 8 10 12 14 16 18 20 



INTEGRATION CONSTANT 'JT 



Fig. 6 — Relative input capacitance of an idealized space charge grid tube for different 

 space charge conditions (voltage ratio <p = 0.04). 



