Method for contactless transmission of electrical energy between wall and wall-hinged wing e.g. door, involves increasing primary voltage of primary coil, when secondary voltage of secondary coil is lesser than reference voltage

摘要

The method involves fixing primary and secondary voltage coils (117,121) to wall (W) and wing (F), respectively. The secondary voltage induced into the secondary voltage coil is detected and compared with reference value. The primary voltage is increased when the secondary voltage is lesser than reference voltage, until the secondary voltage corresponds to the reference voltage. An alarm signal is triggered when the increased primary voltage exceeds predetermined primary voltage value. An independent claim is included for device for contactless transmission of electrical energy between wall and wall-hinged wing.