BATTERY VOLTAGE-DROP ALARM CONTROLLER OF ELECTRONIC EQUIPMENT

摘要

PURPOSE:To make an alarm treatment in case of a battery voltage-drop possible even in a high load operating state by changing over the second operating available lower standard when an electronic equipment is in a high load operating state against a battery. CONSTITUTION:The first reference voltage V1 is set to an operating available lower voltage of an electronic equipment. The second reference voltage V2 is set to a voltage value to be lowered instantaneously when a high load device 60 is operated or a voltage-drop allowable lower value of a battery 10. A main control section 30 inputs a signal (B) and signal (C) outputted from a voltage detection circuit 20, and the voltage-drop of the battery 10 is detected on the basis of the signal (B) when the electronic equipment is in a low load operating state. When the electronic equipment is in a high load operating state, the voltage-drop of the battery 10 is detected on the basis of the signal (C). In case those detection states reach the first or the second operating available lower standard, the main control section 30 performs alarming.