Patent ID: 11868092
Assignee: THE SWATCH GROUP RESEARCH AND DEVELOPMENT LTD
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 25:
26. The timepiece according to claim 3, wherein the electromagnetic assembly comprises a pair of bipolar magnets mounted on a balance of the mechanical resonator and having two respective magnetization axes which are parallel with a geometric plane comprising the axis of rotation of the balance with opposite respective polarities, and the at least one coil which is rigidly connected to the support of the mechanical resonator, the two bipolar magnets of said pair being arranged on the balance such that the respective magnetic fluxes thereof pass through the at least one coil with a time-lag but with in part a simultaneity of the incoming magnetic flux and the outgoing magnetic flux such that an induced voltage pulse generated between the two ends of the at least one coil upon the passage of the pair of magnets facing the at least one coil exhibits a central lobe of maximum amplitude resulting from simultaneous coupling of the pair of magnets with the at least one coil; wherein a median half-axis starting from the axis of rotation of the balance and passing via the midpoint of the pair of bipolar magnets defines a reference half-axis when the resonator is at rest and thus in the neutral position thereof, the at least one coil exhibiting at the center thereof an angular lag relative to the reference half-axis so as to generate in each oscillation period of the mechanical resonator, in each effective functioning range, two central voltage lobes having opposite polarities and forming respectively said first voltage lobe and said second voltage lobe; and wherein said electric converter comprises a double-alternation rectifier arranged to be able to recharge the power supply capacitor upon the appearance of first voltage lobes and upon the appearance of second voltage lobes.