| 摘要 |
An alternating current (AC) light emitting diode (LED) luminescent apparatus includes: a rectification unit configured to: receive an AC input; and output, via full-wave rectification, a rectified voltage; light emitting groups configured to sequentially receive the rectified voltage in associated with corresponding emission periods; light emitting group driving units configured to respectively control current applied to the light emitting groups; and an LED driving integrated circuit configured to sequentially operate the light emitting groups based on voltage levels of the rectified voltage. Each emission period includes: a first portion associated with a constant current level; and a second portion associated with a higher current level than the constant level, the second portion occurring before the first portion. |
