DC Field | Value | Language |
---|---|---|
dc.contributor.author | 조규형 | ko |
dc.date.accessioned | 2017-12-20T12:48:12Z | - |
dc.date.available | 2017-12-20T12:48:12Z | - |
dc.date.issued | 2001-11-13 | - |
dc.identifier.uri | http://hdl.handle.net/10203/236492 | - |
dc.description.abstract | A power-factor correction circuit of an electronic ballast for fluorescent lamps which includes an input full-wave rectification circuit for full-wave rectifying an AC input voltage from an AC input power source, a DC-link capacitor for supplying a DC-link voltage in response to an output voltage from the rectification circuit and a resonant inverter connected in parallel to the DC-link capacitor. The power-factor correction circuit comprises a charge pumping circuit disposed between the AC input power source and the rectification circuit, a valley-fill DC voltage supply circuit disposed between the rectification circuit and the DC-link capacitor, and a high-frequency full-wave rectification circuit disposed between the DC voltage supply circuit and the DC-link capacitor and connected to a secondary winding of a power transformer in the resonant inverter. The high-frequency full-wave rectification circuit includes a first pole connected to the secondary winding of the power transformer and a second pole connected to a common connection point of a plurality of stabilizing capacitors connected in series respectively to the fluorescent lamps. Therefore, a power factor of the ballast is improved and power supply is automatically controlled according to the number of fluorescent lamps being turned on. | - |
dc.title | Power-factor correction circuit of electronic ballast for fluorescent lamps | - |
dc.type | Patent | - |
dc.type.rims | PAT | - |
dc.contributor.localauthor | 조규형 | - |
dc.contributor.assignee | KAIST | - |
dc.identifier.iprsType | 특허 | - |
dc.identifier.patentApplicationNumber | 09627460 | - |
dc.identifier.patentRegistrationNumber | 6316883 | - |
dc.date.application | 2000-07-28 | - |
dc.date.registration | 2001-11-13 | - |
dc.publisher.country | US | - |
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