The vacuum tube as a generator of alternating-current power

The first part of this article deals with the operation of the tube when separately excited, the variation of power with the amount of excitation, the load impedance, etc., and also gives an analysis of the forms and phases of voltages and currents in the different parts of the circuit. The second part deals with the efficiency of the tube as a generator; the action is analyzed in detail and the conditions for maximum efficiency deduced, the theoretically deduced conclusions being substantiated by experimental data. Oscillograms are given to show the action of the tube under practically all the conditions which are likely to occur.