The Key Point to Choose and Use Switching Power Supply

The Key Point to Choose and Use Switching Power Supply

The points are needed to know when choosing switching power supply

1)Choosing the matched input voltage range.

2)Choosing the matched output voltage and current.

3) Considering the load performance. If the load is a motor, a light bulb or a capacitive load, it should choose the higher peak current to avoid over-load when power on the device. If the load is a motor, the voltage backflow should be considered when the device is shutdown.

4) The working environment temperature and auxiliary heat dissipation device of power supply should be considered, and the power supply output need to be decreased when working in the high environment temperature.

5) Choose the function according to the application.

Maintenance function: Over-voltage protection, Over-temperature protection, Over-load protection, short-circuit protection, etc.

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

6)Choose the power supply which is comply with the related safety standard and EMC approved

The points are needed to know when using switching power supply

1)Before using the power supply, confirm whether the input and output voltage and current are consistent with the nominal value of the power supply used.

2)Before using the power supply, check whether the wires of input and out are connected correctly to avoid destroying the device.

3)Check whether the installation is strong, whether the screws are touching the power board , and measure the insulation resistance of the case, the input and the output to avoid electric shock.

4) To ensure the safety and reduce the interrupt when using the power supply, please ensure the grounding terminal is firmly connected.

5)Multi-output power supplies are generally divided into main output and auxiliary output. The main output characteristics are better than the auxiliary output, and generally the output with big output current is the main output. In order to ensure the adjustment rate of the output load and output dynamics, it is generally required that each channel takes at least 10% load.

6)Frequently powering on and off the power supply will affect its life.

7)The working environment and the degree of loading will also affect its life.