| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a light and small monitoring control panel for a disaster-prevention system, which charges a battery using DC power converted from DC power for an internal device. <P>SOLUTION: The monitoring control panel for the disaster-prevention system is supplied with the DC power converted and outputted by a rectifier for inputting AC power from a commercial AC power supply when the commercial AC power supply is sound, and is supplied with the DC power from the battery when the commercial AC power supply is interrupted. An inversion power supply is provided for inputting an output from the rectifier, outputting and converting it into a DC voltage with a polarity different from the output voltage. The battery is charged, and has a positive terminal connected to an output terminal of the rectifier, and a negative terminal connected to the output terminal of the inversion power supply. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
