Figure 3 (d) above was used to

   Figure 3 (d) above was used to stabilize the inductive step-up converter circuit of the white  LED Downlight  LED electric current, wherein the feedback voltage of the current detecting resistor can be power loss to a minimum. Since the white LED are connected in series, so in any case, white LED current can be perfectly matched to the accuracy of the current feedback from the voltage converter determines the accuracy,

LED Downlight

 without changing the white LED forward voltage affected. MAX1848 driver uses three white LED, the efficiency of up to 87%. Using MAX1561 drive six white LED, the efficiency of up to 84%. The advantages of this circuit; the regulator and the white LED connection between just two points, while the white LED connected in series are not subject to the influence of the boost converter.

  GU10  

1, to enhance the power regulator to drive white LED circuit

    The application of white LED flash into newer areas of application, it show the reliability, durability and the ability to control power white LED makes these devices attractive. The introduction of the incandescent lamp,