| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable setting a voltage output value freely without being affected by a surrounding temperature and aging variation, in a constant voltage output device. <P>SOLUTION: A constant voltage output device that receives a voltage and outputs a voltage of a set voltage value, has: a voltage detector that detects an output voltage value; a voltage setting value storage part that stores a voltage setting value; a comparator that compares the detected output voltage value with the voltage setting value; an operational processing device that functions as a pulse width controller that outputs a pulse width signal having a width based on the comparison result from the comparator; a driving circuit that carries out a switching operation to a signal, which is based on an input voltage, based on the pulse width signal; and a smoothing circuit that smooths a signal, which is based on an output signal from the driving circuit, and outputs the smoothed signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
