Low voltage alarm device to control audible alarm time

摘要

In this study, when the low voltage occurs in the wireless pager and other devices that must maintain a certain voltage, the alarm device is carried out.;The low-voltage sensing part for detecting the low-voltage state and the low-voltage state detected according to the low-voltage sensing part are composed of an alarm occurrence selection part for judging whether an audible alarm has occurred and an audible alarm part and a visual mirror part for generating an alarm according to the signal of the alarm occurrence.;In this way, even if the low-pressure state occurs, only the visual mirror alarm will occur, and the audible alarm can occur immediately after the time of temporary alarm.