| 摘要 |
PURPOSE: A dimmer driving control apparatus of an LED lighting system is provided to prevent a switching device for power control from being triggered by supplying a compensating current. CONSTITUTION: A dimmer(410) controls the illumination of an LED array unit by controlling an conduction angle of a switching device. A bridge diode rectifier(420) rectifies a current power and supplies the current power to a driving power of an LED lighting device(430). A power supply unit(431) smoothes a voltage of a ripple outputted from the bridge diode rectifier. A synchronizing signal and a clock signal generating unit(433) generates a clock signal by using a synchronizing signal. A phase detector(434) detects a phase of a current power. [Reference numerals] (410) Dimmer; (420) Bridge diode rectifier; (431) Power supply unit; (433) Synchronizing signal and a clock signal generating unit; (434) Phase detector; (435) Driving waveform data memory device; (436) Driving controller; (437) D/A converter; (438) Constant current device for an LED; (439) Constant current device for a dimmer |
