Precautions for choosing a switch power supply

1. Precautions when choosing a switch power supply

1) Select appropriate input voltage specifications;

2) Choose the appropriate power. To extend the lifespan of the power supply, models with an additional 30% output power rating can be selected.

3) Consider the load characteristics. If the load is a motor, light bulb, or capacitive load, and the current is high at the moment of startup, a suitable power source should be selected to avoid overload. If the load is a motor, consideration should be given to voltage backflow during shutdown.

4) In addition, it is necessary to consider the working environment temperature of the power supply and whether there are additional auxiliary cooling devices. The power supply needs to reduce its output in high ambient temperatures. The derating curve of output power under ambient temperature.

5) Select various functions according to the application requirements:

Protection functions: overvoltage protection (OVP), over temperature protection (OTP), overload protection (OLP), etc.

Application functions: signal function (normal power supply, power failure), remote control function, telemetry function, parallel function, etc.

Special functions: Power factor correction (PFC), uninterruptible power supply (UPS)

6) Select the required safety regulations and electromagnetic compatibility (EMC) certifications.

2. Precautions for using switch mode power supply

1) Before using a power supply, ensure that the input and output voltage specifications match the nominal value of the power supply being used;

2) Before powering on, check if the input and output leads are connected correctly to avoid damaging the user's device;

3) Check whether the installation is firm, whether the installation screws are in contact with the power board components, measure the insulation resistance between the shell and the input and output to avoid electric shock;

4) To ensure the safety of use and reduce interference, please ensure that the grounding terminal is reliably grounded;

5) Multi output power supplies are generally divided into main and auxiliary outputs, with the main output having better characteristics than the auxiliary output. In general, the main output has a larger output current. To ensure the output load adjustment rate and output dynamics, it is generally required that each channel carry at least 10% load. If auxiliary roads are used instead of main roads, appropriate false loads need to be added to the main roads. Please refer to the specifications of the corresponding model for details;

6) Please note: Frequent switching of the power supply will affect its lifespan;

7) The working environment and load capacity can also affect its lifespan.

Article source: Jiangmen LED Switching Power Supply http://www.gddpdz.com/