Importance

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Abstract

A method to transmit electrical energy between a wall and a door leaf fastened to the wall includes providing a primary power coil and a secondary power coil which are in an inductive operative connection. An electrical primary current flowing through the primary power coil is measured to obtain a measured value. The measured value is supplied to a primary power electronics device which stores a transmission characteristic as a function of a power available at the secondary power coil in dependence on a primary power supplied to the primary power coil. A maximum provided power is applied to the primary power coil when an electrical primary current increases. A secondary power voltage induced in the secondary power coil is limited to a preset maximum value. A primary current is measured and, based thereon, a power applied to the primary power coil is reduced until a required power is induced.

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First Claim