A new construction for an electromechanical transducer makes use of the Wiedemann effect to produce a magnetostrictive coupling between an input and an output winding, which are orthogonally disposed so that there is no direct inductive coupling between them. A first‐order theory of the operation of the transducer is given, and is used to derive an equivalent electrical circuit. The more important characteristics of the transducer are discussed in terms of the equivalent circuit, and are shown to be verified by experimental models. A method for deriving the equivalent circuit components by experiment is outlined, and the performance of a representative model is presented.