| 20110316432 | Power-Saving LED Lighting Apparatus - Disclosed is a power-saving LED lighting apparatus in which the full-wave rectified wave form of the commercial power is used as the driving voltage. The LED lighting apparatus includes a rectifier circuit part which rectifies commercial power and outputs a rectified voltage; a plurality of LED arrays having a plurality of LEDs connected in series and the rectified voltage of the rectifier circuit part is supplied to an anode of the uppermost LED array; a driving part in which one terminal of each switching device for supplying or blocking a driving current to the plurality of LED arrays is connected to each anode of the plurality of LED arrays, and the other terminal thereof is connected to a cathode of the lowermost LED array; and a control part which outputs a control signal for turning on and off the switching devices according to a level of the rectified voltage. | 12-29-2011 |
