| 摘要 |
PROBLEM TO BE SOLVED: To reduce current to be consumed for the control of a chopper-type charging circuit. SOLUTION: When it is detected by a power generation detecting section 10 that an AC power generator AG is in the power generating condition, unidirectional units 3, 4 are fed. Thereafter, when voltages of the output terminal AG1, AG2 exceed reference voltages Vref1, Vref2, the unidirectional units 1, 2 are fed. When the voltages of the output terminals AG1, AG2 exceed the voltage of power supply Vdd, a charging current is supplied to a voltage boosting section 30, via the power supply Vdd and a spike-form electromotive voltage is boosted and is then accumulated. Therefore, since power feeding to the unidirectional units 1 to 4 can be controlled depending on the electromotive voltage condition, current dissipation can be saved. |
