| 摘要 |
PROBLEM TO BE SOLVED: To provide an output voltage regulating system for power unit that enhances the reliability of an entire system by preventing a system malfunction or unexpected data destruction caused by the fluctuation of an output voltage at a power unit. SOLUTION: The power unit for outputting a DC voltage while having a rectifier circuit 2 on a primary circuit side 1 and having a smoothing circuit 4 on a secondary circuit side 3 is provided with an output voltage monitoring circuit 9 for monitoring the output voltage from the smoothing circuit 4, an output voltage regulating circuit 12 for promoting the regulation of this output voltage through the smoothing circuit 4, a microcomputer 10 for detecting an abnormality of the output voltage from the smoothing circuit 4 and performing control so as to correct that abnormality and a memory 11 presetting a reference value in respect to an abnormal voltage value. Outside the power unit, this unit has a function capable of setting the output voltage from a user to the memory 11 through a user interface 13 while connecting this user interface 13 to the memory 11 and a function capable of monitoring the alarm or abnormal state of power source abnormality or the like. |
