Introduction to How to Select a Switching Power Supply
1. Selection of output current
Due to the high efficiency of switch mode power supplies, which can generally reach over 80%, it is important to accurately measure or calculate the maximum absorption current of the electrical equipment when selecting their output current, in order to ensure that the selected switch mode power supply has a high cost performance ratio. When choosing a switch mode power supply, it is important to calculate the required current of the electronic product. Only by calculating the required current of the electronic product can the selection of a switch mode power supply be more stable,.
2. Grounding
Switching power supplies generate more interference than linear switching power supplies. For electrical equipment sensitive to common mode interference, grounding and shielding measures should be taken. Therefore, switching power supplies should generally be equipped with EMC electromagnetic compatibility filters. So everyone doesn't have to worry about interference caused by switching power supplies.
3. Protect the circuit
Switching power supplies must have overcurrent, overheating, and short circuit in their design, http://www. The advertising removal website has lightning protection and other protective functions, so in the design, the switch power module with complete protection functions should be preferred, and the technical parameters of the protection circuit of the switch power supply should match the working characteristics of the electrical equipment to avoid damaging the electrical equipment or switch power supply. Because only by matching the working characteristics of the electrical equipment can it be used without damaging the electrical equipment and switch power supply.
The above is how to choose a switching power supply for everyone. To select the switch point, the first step is to choose the output current of the switch power supply, because only by selecting the right current can the following be selected. Then, choose the grounding of the switch power supply, because some switch power supplies can cause interference to people's work. If you choose a good filter, you don't have to worry about the switch power supply causing interference. The protection circuit of the switching power supply is very important because the switching power supply has overcurrent, overheating, short circuit, and lightning protection in its design. Without these protections, the switching power supply and electrical equipment are easily damaged. As long as you remember the above three points, you will choose a good switch power supply.
