As a supporting product, LED power supply is currently in the market due to many manufacturers of uneven quality, so if consumers want to buy quality pass LED power supply, the following factors need to be considered when purchasing LED power supply:

Factors to consider when choosing LED power supply

1. Input voltage range

Choose the appropriate input voltage range: Take AC input as an example, the commonly used input voltage specifications are AC110V, AC220V, so there are 110V, 220V AC switching, and universal input accordingly. Wide voltage (AC: 100V-277V) three specifications. The input voltage specification should be selected according to the region of use.

2. Power

Choose the right power supply: LED power supply will consume a part of the power when working and release it in the form of heat. In order to increase the life of the power supply, a 25% margin is generally selected according to the actual power required by the power supply.

3. Load characteristics

Consider the load characteristics: In order to improve the reliability of the system, it is recommended that the LED power supply work at 50%-80% load, that is, if the power used is 20W, the output power should be selected as 25W-40W LED power supply. If the load is a motor, light bulb or capacitive load, the starting current is large when the machine is turned on, and a suitable power supply should be selected to avoid overload. If the load is a motor, the voltage inversion during shutdown should be considered.

4. Safety performance

Choose each function according to the application needs: Protection functions: over voltage protection (OVP), over temperature protection (OTP), overload protection (OLP), short circuit protection, etc. Application functions: signal function (normal power supply, power supply failure), remote control function, telemetry function, parallel function, etc. Special functions: power factor correction (PFC), uninterrupted power supply (UPS).

5. Safety requirements

Select the required safety regulations and electromagnetic compatibility (EMC) certification: according to the usage, determine the required output voltage and current; the size, installation method and installation holes of the power supply There are several outputs, and whether each output needs electrical isolation; input voltage range; according to the ambient temperature, determine the derating degree and power supply of the switching power supply; whether certification and safety standards are required; the cooling method of the power supply: natural cooling or Forced air cooling; Electromagnetic compatibility standards, etc.

6. Working environment

In addition, it is necessary to consider the working environment temperature of the power supply, whether there is any additional auxiliary cooling equipment, and the place of use. In the working environment that is too high, the power supply needs to derate the output, please refer to The derating curve of the working ambient temperature to the output power. If it is used in outdoor places, the waterproof requirements for LED power supply should also be considered.

7. Manufacturer quality

Choosing a brand, switching power supply, as the heart of electronic equipment, plays a vital role in the safe and reliable operation of electronic equipment. Try to choose the LED power supply of regular manufacturers, including standard size and output voltage are more general. In this way, the delivery time is faster; on the contrary, the special size and output voltage will prolong the delivery time and increase the cost.

The above factors that need to be considered when purchasing LED power supply are shared here, I hope this article will be helpful to you. If there is anything you don't understand, you can leave a message to the editor and we will answer you as soon as possible.