On the Predetermination of Oscillating Amplitudes and Circuit Constants L, C and M under the Condition of Maximum Output of Triode Oscil'ators

Abstract

The static characteristic surface of the plate current of triode tubes as a function of the plate and grid voltages are assumed to be represented with parts of four planes mutually intersecting. Then, the current and voltage amplitudes of the oscillating circuit are calculated from the condition of equality of the mean power supplied to the oscillating circuit by the source and tube, and that consumed in the oscillating circuit, neglecting the grid circuit loss. The calculated values are shown to confirm with experiments. In the same way, the circuit constants L, C and M which give the maximum output in the oscillating circuits for a specified frequency are calculated, when the source voltage and the circuit resistance are given.
Moreover, it is pointed out that one of the extremity points of plate current which gives the maximum output, appears to locate in the neighborhood of a particular point on the characteristic surface under different working conditions. If such is true, and the particular point is stated, the process of constant calculation is extremely simplified