METHOD AND DEVICE FOR THE ELECTRICAL POWER SUPPLY OF AN APPLIANCE

摘要

The aim of the invention is to provide an emergency power supply for certain electronic appliances which must be maintained in standby mode when the power is turned off and they are no longer powered by means of the usual electrical energy source thereof, and more specifically to authorise stand-alone maintenance operations without interrupting the standby mode. According to the inventive method, an appliance is powered by means of a plurality (2, 3) of batteries or accumulators which are successively activated by a switching device (1) controlled by a sensor (6) for crossing a nominal threshold by a lower value, by means of the electrical discharge voltage of the operating battery or accumulator (2), and to trigger an alarm requesting maintenance when the last stored battery or accumulator is activated.