Supplement to "On the Input Admittance" With Reference to the Voltage Amplification Ratio

Abstract

The following relation exist between the input admittance, Y_i and the voltage amplification ratio, K of the thermionic amplifier, the circuital arrangement of which is shown in Fig. 1. jωC₂K=Y_i-(Y_i)0
where (Y_i)0 is the input admittance for the case of zero plate impedance.
In the paper "On the Input Admittance", published before by the same author, the circle diagram of the input admittance was treated mathematically and also experiments were described in verification.
In this paper, as supplementary to the previous one, the author considers the circle diagram of the voltage amplification ratio for various cases of plate load'ng, and experiments are made at 100, 000 cycle by means of the CR type a. c. potentiometer.