| 摘要 |
<p>PURPOSE: By supplying the power through the pulse width modulator in condition it best suiteds the AC power source LED lighting device having the power source stabilization function maximizes the consumption energy reduction effect of product. CONSTITUTION: An LED driver circuit(10) is input the AC power source corresponding to the driving source of the apparatus in outside. The LED driver circuit rectifies the AC power source through the bridge rectifier circuit(15). The LED driver circuit sanctions the rectified power source as described above in a plurality of LEDs and the serially connected voltage drop device. LEDs are classified into a plurality of LED groups(20). Each LED group is connected to the LED driver circuit.</p> |
