Inferior power supply leads to the problem of laser power drop

The input power of A40640 module is about 40W. In general, when purchasing NEJE official mechanical equipment, it will be equipped with a 12V4A or 12V5A UL certified sufficient power supply; if you purchase the module separately, you need to ensure that your power supply has enough power, some inferior quality For example, when the power supply is marked as 12V5A, in fact, when the power reaches 40W, the voltage will drop to 9-10V. Such a power supply cannot provide enough voltage to the module, which will cause the laser module to not fully release the powe.