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What is the difference between switching power supply and rail mode power supply？

Article Source：Kinri Energy | Author：Kinri Energy | Issuing Time：2024.04.22
Definition of Switching Power Supply and Rail Power Supply


Switching Power Supply

Switching Power Supply is a type of power supply that first converts AC power into DC power, and then converts DC power into the required DC voltage and current output power. It adopts high-frequency switching power modulation technology, which has high output current, high efficiency, and low noise. It is widely used in electronic instruments, communication equipment, computer equipment, industrial automation control and other fields.


240W Din Rail Switching Power Supply

A DIN rail power supply refers to a DC power supply that is fixed on a rail and converts AC power into a specific voltage and current through a power cord. It has the advantages of wide applicability, easy installation, stable operation, and high reliability, and is widely used in fields such as mechanical equipment, automation control, and processing equipment.

The difference between switching power supply and rail mode power supply

1. Functional differences

Switching power supplies have functions such as voltage and current stabilization, overvoltage and overcurrent protection, short circuit protection, overload protection, etc. They can meet various electronic devices that require different output powers and voltages, including various high-performance computer systems, communication systems, industrial automation control, and large-scale civil equipment.

The output power of the rail power supply is relatively small and stable, but it has advantages such as a wide input voltage range, low noise, and easy installation. It is more suitable for electronic devices that do not require too much output current and voltage, such as PLCs, relays, sensors, and control panels.

2. Differences in characteristics

Switching power supplies have the characteristics of high efficiency, high precision, high reliability, and low noise, but are easily affected by factors such as electromagnetic interference, temperature changes, and switch tube lifespan.

The rail power supply has the characteristics of simplicity, stability, convenient wiring, compact size, and low price, but its output current and voltage are small, and its application range is relatively narrow.

3. Differences in usage scenarios

Switching power supplies are suitable for various electronic devices that require different output powers and voltages, while rail power supplies are suitable for relatively simple electronic devices such as PLCs, relays, sensors, and control panels.

How to choose the right switch power supply and rail power supply

When selecting switch mode power supplies and rail mode power supplies, the selection should be based on actual needs and the characteristics of electronic devices. Firstly, to determine the voltage and current parameters required for electronic products, choose a switching power supply or rail power supply with stable output current and voltage. Secondly, it is important to choose branded products with high reliability, good safety performance, and stable operation. Finally, comprehensive consideration should be given to the characteristics and usage scenarios of electronic products, and suitable working temperature ranges and environmental conditions should be selected.

Conclusion

There are certain differences between switch mode power supplies and rail mode power supplies in terms of functionality, characteristics, and usage scenarios. When choosing, it is necessary to fully consider the actual needs and characteristics of electronic products, and choose high-quality and suitable branded products. Only by selecting the right switch power supply and rail power supply can electronic products achieve optimal performance and provide users with reliable, efficient, and stable power supply.
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