626 



BELL SYSTEM TECHNICAL JOURNAL 



-1.0 -0.5 



ANODE VOLTAGE, Vq 



Fig. 6 — .\dmittance of a diode. 



allow for the circuit and tube losses previously discussed. The equivalent 

 series resistance Rs of the diode circuit was determined by biasing the tube 

 negatively to the point where a further increase in bias failed to produce a 



