| 摘要 |
PURPOSE:To eliminate a hit of an uninterruptive power system at low cost easily, in the uninterruptive power system wherein when a commercial a.c. input is cut off, current is switched to an a.c. inverted from a battery for back-up and the a.c. is rectified to obtain a d.c. output. CONSTITUTION:In a common power system 100, a rectifying diode 6 and a smoothing capacitor 7 are provided. An a.c. from a switching relay 3 is made into a d.c. and power is supplied to a terminal power system 200. As the smoothing capacitor 7, a capacitor having the capacity 5-10 times that of a conventional one targeted for smoothing is used. |
