Metal halide lamp driving control device of projection television

摘要

The present invention can control the driving of the metal halide lamp by turning on / off the step-down converter control unit so that the input unit of the power source of the metal halide lamp and the logic board can be shared, A halide lamp drive control device is provided.;The present invention relates to a DC-DC converter comprising a noise filter (10) for suppressing noise of an AC input terminal, a rectifying part (20) for rectifying the output of the noise filter (10) DC step-down converter 30 is connected to the output end of the rectifying part 20 and connected to the DC-DC step-down converter 30 in parallel with the rectifying part 20, And a logic board 50 that receives power and outputs power necessary for each part of the system.