COLD CATHODE TUBES FOR AUDIO FREQUENCY SIGNALS 1385 



110 



S 109 

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108 



106 



x-^ u- - 



1 T 



» 4 8 12 16 20 24 28 



DIRECT OPERATING CURRENT IN MILLIAMPERES 



Fig. 11 — Static volt-ampere characteristic of hollow cathode tube. 



15 



26 



32 



6 8 10 12 14 16 18 20 22 24 26 



DIRECT OPERATING CURRENT IN MILLIAMPERES 



jTjg 12 — Resistive and inductive components of impedance of a hollow cathode 

 tube. 



