An electromechanical generator for converting mechanical vibrational energy into electrical energy, the electromechanical generator comprising: a central mast, an electrically conductive coil assembly fixedly mounted to the mast, the coil assembly at least partly surrounding the mast, a mount for the coil assembly extending radially inwardly of the coil assembly and fixing the coil assembly to the mast, wherein the mount comprises a conical wall extending between the coil assembly and the mast, a magnetic core assembly movably mounted to the mast for linear vibrational motion along an axis about an equilibrium position on the axis, the magnetic core assembly at least partly surrounding the coil assembly and the mast, and a biasing device mounted between the mast and the magnetic core assembly to bias the magnetic core assembly in opposed directions along the axis towards the equilibrium position. The conical wall maybe integral with an annular coil support, where the support includes a radially orientated inner wall connected to the conical wall. The conical wall may be moulded from thermoplastic material. The magnetic core assembly may comprise two opposed magnetic circuits spaced along the axis comprising pairs of magnets with poles of the magnets having common polarities that face each other.
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