| 摘要 |
The present invention relates to a device for controlling the brightness of a lamp for a vehicle comprising a control signal generation unit and a constant voltage unit. The control signal generation unit generates a pulse width modulation (PWM) control signal for controlling a lamp unit in targeted brightness. The constant voltage unit converts the PWM control signal inputted from the control signal generation unit into DC voltage and outputs the same to the lamp unit. The present invention is provided to control the brightness of a lamp by converting the PWM control signal into the DC voltage, thereby improving the resistance for noise and reducing a lamp ringing phenomenon which is generated according to a frequency which turns on/off a light emitting diode. |
