| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a controller that automatically detects the maximum operating current of a light source having advantages of high detection speed, high detection accuracy, and high practicality, and also provide a controlling method of the controller.SOLUTION: The controller includes a master control module, a constant current output module, and a load detection module. A control signal output end of the master control module is electrically connected to a control signal input end of the constant current output module; the constant current output module outputs a corresponding constant current according to a control signal of the master control module; and a signal output end of the load detection module is electrically connected to a signal input end of the master control module, while a current output end of the constant current output module is electrically connected to a detection input end of the load detection module. The present invention has the following beneficial effects: a controller for automatically detecting the maximum operating current of a light source applies a rated voltage to a light source circuit and simultaneously detects a current value of the light source circuit, after connected to the light source, and sets the maximum output current of the light source circuit on the basis of the current value.</p> |
