| 摘要 |
According to the present invention, disclosed is a control circuit of a light emitting diode lighting device which has improved power efficiency. The control circuit controls light emission of at least one light emitting diode group in response to a change of a rectification voltage, and comprises a current source which provides a main current using a driving current outputted through a current route of a driver and a sub-current using a rectification current provided for a plurality of light emitting diode groups. Therefore, the control circuit can perform charging by a current provided from the current source and provide a charging voltage for an additional device. |
