Calibrators of Headlamp Tester for Motor Vehicle is the standard source which the optical axis can rotate. It consists of lighting, DC regulated power supply and voltage meter, optical axis angle of rotation and reading institutions, horizontal adjustemt institutions and the parts of find are institutions. By JJG 967-2001 Motor Vehicle headlamp tester calibrator verification procedures required, we should deal with its luminous intensity, the optical axis angle and the horizontal adjusting mechanism for measuring the performance test to ensure its normal use. The design considerations to the limited of the power tube use. We use in the functional regulation can replace the power control means another adjustment, that adjustment by PWM control of output voltage, so we can ensure that the standard output of light intensity light source is not occur due to the existence of linear electric drift problem without accurate, more accurate output voltage regulation to achieve their goals.
