POWER SOURCE VOLTAGE DETECTION APPARATUS

摘要

A power source voltage detection apparatus is provided, including a reference voltage generator connected to a differential amplifier via a first transmission line and decreases a power source voltage of a direct current power source to output a power source reference voltage, the first transmission line transmitting the power source reference voltage as a first power source voltage detection voltage; a standard voltage generator connected to the differential amplifier via a second transmission line and outputs a predetermined standard voltage, the second transmission line transmitting the standard voltage as a second power source voltage detection voltage; the differential amplifier differentially amplifying the first and second power source voltage detection voltages; and an abnormality detector which, based on the first and second power source voltage detection voltages, detects the power source voltage and detects an abnormality of the first transmission line and/or the second transmission line.

主权项

1. A power source voltage detection apparatus, comprising:
a reference voltage generator which is connected to a differential amplifier via a first transmission line and which decreases a power source voltage of a direct current power source to output a power source reference voltage, wherein the first transmission line transmits the power source reference voltage as a first power source voltage detection voltage; a standard voltage generator which is connected to the differential amplifier via a second transmission line and which outputs a predetermined standard voltage, wherein the second transmission line transmits the standard voltage as a second power source voltage detection voltage; the differential amplifier which differentially amplifies the first power source voltage detection voltage and the second power source voltage detection voltage; and an abnormality detector which, based on the first power source voltage detection voltage and the second power source voltage detection voltage, detects the power source voltage and detects an abnormality of the first transmission line and/or the second transmission line.