To provide a power supply apparatus, comprising a capacitor unit using a plurality of sets of capacitor cells, and monitoring short-circuit failures or open failures, in a simple manner without monitoring the voltages of respective capacitor cells.
A power supply apparatus comprises an unit voltage detection portion 4 for detecting the voltages of a capacitor unit 3, a cell voltage detection portion 5 for detecting the voltages across a given series stage of a capacitor unit 3, and a processing portion 6 for processing voltages from these two voltage detection portions. Either short failure or open failure of a capacitor cell 2 is determined, by making a comparison between a voltage across a given series stage of the capacitor unit 3 predicted from unit voltage, and the voltage across a given series stage that is actually determined from the cell voltage detection portion.
| JPS58176536 | 【考案の名称】電源切替回路 |
| JP5872373 | Non-contact power supply method |
| WO/2024/113478 | CHARGING CASE FOR EARPHONES |
OHASHI TOSHIHIKO
Hiroki Naito
Daisuke Nagano
Next Patent: MOTOR CONTROL DEVICE