Bieler, T.Perrottet, M.Nguyen, V.Perriard, Y.2006-06-152006-06-152006-06-15200210.1109/TIA.2002.803017https://infoscience.epfl.ch/handle/20.500.14299/231835WOS:000178226300019In some applications, contacts between two devices are the first cause of dysfunctions. The aim of this paper is to transfer contactless power energy to add new functions to a tool (e.g., drill machine). A bidirectional communication is also needed. This is realized with an ironless high-frequency transformer for both power and information transmission. Different coil geometries have been studied to reduce mutual inductance between power and information coils. This new solution enables to build low-cost and smart energy transfer systems including communication.Airgap transformerData transmissionEnergy transmissionIronlesstext::journal::journal article::research article