| 摘要 |
PROBLEM TO BE SOLVED: To sustain a predetermined monitoring state in a photovoltaic power generator through a simple constitution even when a commercial power supply is interrupted. SOLUTION: In an inverter circuit 104, switching elements Xa-Yb connected in bridge are turned on/off to convert a DC power generated from a solar panel 102 into an AC power. Power from the solar panel is fed to a switching power supply for feeding power to a microcomputer in an apparatus, each detecting section, switching elements, etc. Each switching element is connected in parallel with a diode 130 and when the power generation of solar cell is interrupted, AC power can be fed from a commercial power supply to the switching power supply and the interior of solar power generator is monitored and controlled appropriately. |
