This reduce the consumption of energy of the stepper motor of a piece of electronic timepiece and the various electronic timepiece implementing this process

摘要

The invention relates to the pieces of producing equipped of a motor not - to -. & / p & & p & the process according to the invention for reduce the consumption of energy of the engine, while adapting automatically the time of the driving pulses which are granted on has its charge and its supply voltage, consists in measuring, during the application of a pulse at the control coil of the engine, the variation of the magnetic induction flux in the stator and to interrupt the pulse when this variation of flux reaches a value predetermined. The measurement of the flux variation can be done by sensing the current in the control coil and integrating the difference between the supply voltage of the coil and the product of the current by the resistance in direct current of the coil or regulated amounts an auxiliary coil of detection and integrating the voltage induced in that -. & / p & & p & the invention applies in particular to the watch has an analog display.