Abstract: A device for supplying an electronic circuit with a dock signal having a dock frequency includes a frequency actuator that generates the dock signal in accordance with a frequency setting according to a regulation mechanism. A control module selectively applies to the frequency actuator a first frequency setting or a second frequency setting that is higher than the first setting.

Abstract: This method of converting a displacement of a magnetic object into a signal directly perceptible by a human being, comprises:-the acquisition (32) of a temporal succession of measurements of a magnetic field modified by the displacements of the object during a sliding time window of predetermined duration,-the construction (34) on the basis of this acquired temporal succession of measurements of several signals each representing a characteristic of the measured magnetic field dependent on a corresponding characteristic of the displacement of the object, and ? the adjustment (50) of several parameters of the directly perceptible signal as a function of the signals so as to render these characteristics directly perceptible.