Abstract: A pressure transducer having a substantially linear output signal with respect to a given phenomenon of interest, which in turn is a non-linear function of a pressure differential. An interior chamber in a housing is divided into compartments by a thin, flexible, magnetically permeable diaphragm. Stationary reactance elements are positioned on opposite sides of the diaphragm at approximate gap distances therefrom (with the diaphragm unflexed) of from 0.25 mm to 4.0 mm for one element and from 0.05 mm to 0.8 mm for the other, the ratio of the gap for one element to the gap for the other element being at least 2:1. The diaphragm flexes when a pressure differential representing the phenomenon of interest is applied across it, and thereby changes the reactive coupling with each of the reactance elements.