Power supply circuit

The invention discloses a power supply circuit and a lighting device. The power supply circuit includes a rectifying circuit, a transformer, and a current controller. The rectifying circuit is configured to rectify power of an AC power supply and supply the power to a light source. The transformer i...

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Bibliographic Details
Main Author YUKIKAZU NOBATA
Format Patent
LanguageChinese
English
Published 12.02.2014
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:The invention discloses a power supply circuit and a lighting device. The power supply circuit includes a rectifying circuit, a transformer, and a current controller. The rectifying circuit is configured to rectify power of an AC power supply and supply the power to a light source. The transformer is electrically disposed between the AC power supply and the rectifying circuit. The transformer includes a primary winding and an auxiliary winding. The current controller is configured to adjust an amount of current flowing to the light source by detecting a voltage signal of the auxiliary winding and a signal based on the current flowing to the light source.
Bibliography:Application Number: CN201310325869