To provide a device which can perform detection of degradation and protection of operation of a capacitor without reducing reliability of the arrangement, only by adding minimum necessary equipment to an existing system.
An alternating current power supply 1 is connected to a rectifying part 2, and a smoothing part 3 is connected parallel to the output end of this part. Between the rectifying part 2 and the smoothing part 3, a current detecting part 11 is provided. To one end of the smoothing part 3, a load 13 and a power supply detecting part 14 are connected in this sequence. A control part 9 has a capacitor capacity estimating means 101 which estimates the capacitor capacity of a capacitor 3a or 3b.
COPYRIGHT: (C)2010,JPO&INPIT
| WO/2016/032877 | MULTI-STAGE EQUALIZATION |
Kazunori Sakahirobe
Yosuke Shinomoto
Yorita Masami
Shunsuke Tachibana
Nippon Kenkyu Corporation
| JP64091064A | ||||
| JP11356036A | ||||
| JP11215880A | ||||
| JP62285625A | ||||
| JP2004343823A |
Kiyoshi Yasushima
Souji Sasaki
Noboru Omura
Takanashi Norio