Design Equations for Reactance-Tube Circuits

Without assuming the usual approximations, design equations are derived for several systems of reactance-tube modulation. Empirical methods are used to derive expressions for the total band swept, in which the effect of each parameter can be directly evaluated. The analysis was completed without the use of the usually accepted simplifying relationships between the impedances of the feedback network. The critical point where a given-type network changes from an apparent inductance to an apparent capacitance is noted.