Why I can not turn on the power supply smoothly when the loads are motors, light bulbs or capacitive loads?

                                                                                                                
If you connect the switching power supply/adapter to motors, light bulbs, or high capacitive loads, you will have a high output surge current when you turn on the switching power supply/adapter and this high surge current will cause failure of start up. We suggest using switching power supply/adapter with constant current limiting protection to deal with these loads.