Audio frequency impedance of gas gap speech tube with double anodes

The impedance of a speech tube with double anodes is practically a pure resistance, which is expected to be deduced from some physical quantities, studied in our research. The gap resistance R is inversely proportional to the discharge current, IK, and is reduced by proper construction of the anodes in which the interaction of the two anodes is in its fullness. For example, our experimental tube has an even number of wire anode elements, mounted in a circle having the cathode rod at its center, and these elements are arranged alternatively making two anode groups. In this tube, increasing the pairs of anode, the gap resistance reduces to a minimum value.