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专利名称：AC voltage detection circuit and method,
charging circuit and method, chopper circuitand chopping method, chopper chargingcircuit and method, electronic apparatus,and timepiece
发明人：Shinkawa, Osamu申请号：EP00309060.2申请日：20001016公开号：EP10960A2公开日：20010502
专利附图：
摘要：In an AC voltage detection circuit, a chopper charging circuit converts aninduced voltage of an AC generator to a chopper voltage and charges a main capacitor.When the chopper voltage becomes a predetermined voltage or less, the choppercharging circuit charges an auxiliary capacitor and detects a power generation state ofthe AC generator at an early stage based on a potential obtained by adding the potentialbetween output terminals of the AC generator and the auxiliary capacitor and starts thecharging.
申请人：SEIKO EPSON CORPORATION
地址：4-1, Nishishinjuku 2-chome Shinjuku-ku Tokyo JP
国籍：JP
代理机构：Sturt, Clifford Mark
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