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专利名称：METHOD FOR PROVIDING LOW VOLTAGE
DC POWER FROM AC MAINS POWER
发明人：Namwook Paik申请号：US14381878申请日：20120302
公开号：US20150016158A1公开日：20150115
专利附图：
摘要：According to one aspect, embodiments of the invention provide a power supplysystem comprising an input line configured to receive input AC power, a first capacitorcoupled to the input line, a second capacitor, a controller, a rectifier having an input
coupled to the first capacitor and an output coupled to the second capacitor, the secondcapacitor further coupled to the controller, and a switch selectively coupled across thefirst capacitor, and configured to selectively bypass the first capacitor, wherein thecontroller is configured to detect a voltage across the second capacitor, operate theswitch to charge the second capacitor at a first rate if the voltage is above a
predetermined threshold, and operate the switch to charge the second capacitor at asecond rate if the voltage is below a predetermined threshold.
申请人：Namwook Paik
地址：Acton MA US
国籍：US
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