Today, the author talks to you about how to choose a suitable switching power supply when buying it, so as to avoid being unable to use it in their hands. Next follow the author's guidance, facing the switching power supply how to choose.
1. Type of the switching power supply
Understand your requirements and determine the type of input and output, whether AC to DC, DC to DC, or DC to AC.
2. Select an appropriate power level for the switching power supply
In order to improve the reliability of the system, it is recommended that the actual work of the switching power supply at 50%-80% load is better, that is, about 30% more output power of the switching power supply. For example, to power 20W, should choose the output power of 25W-40W switching power supply. If the load is motor or capacitive, the load will affect the power supply at the moment it is turned on. In this case, the power should be higher or the specific switching power supply with inductive load should be supported.
3. Other factors
Of course, there are many buyers and many demands. Maybe I need waterproof ones, ones with size requirements, ones that have passed EMC safety regulations or other requirements. There are too many uncertainties.
