DEVICE FOR COMPENSATING VOLTAGE DIFFERENCE IN AUTOMOBILE

摘要

PROBLEM TO BE SOLVED: To provide a device for compensating voltage difference, which effectively avoids offensive luminance change of a display device. SOLUTION: The device includes: a micro controller; a voltage converter; a pulse width modulation controller; an input voltage measuring apparatus for measuring an input voltage of the voltage converter and transmitting the measurement value to the micro controller; an output voltage divider for measuring an output voltage of the voltage converter; a voltage modulator for modulating a voltage to be impressed by the micro controller; and component element. The voltage impressed by the output voltage divider and the voltage modulated by the voltage modulator are arithmetically coupled by the component element. The coupled voltage is impressed to the pulse width modulation controller as an input signal. The voltage rising rate is set by the micro controller in the pulse width modulation controller. The output voltage increases thereby within a predetermined time. COPYRIGHT: (C)2010,JPO&INPIT