With the continuous development of modern electronic equipment and industrial applications, the diversity and reliability of power supply are particularly important. Among the many power solutions, 24V power supplies and switching power supplies (SMPS) have been widely used in various fields due to their high efficiency and stability. This article will explore the basic concepts, application areas and advantages of 24V power supplies and switching power supplies in industrial and electronic equipment.

1. Basic concepts and applications of 24V power supplies

1. Basic concepts of 24V power supplies

24V power supply is a power supply device with an output voltage of 24 volts. It is widely used in industrial automation, communication equipment, LED lighting and other fields. 24 power supplies are generally divided into two categories: AC-DC power converters and DC-DC power converters. AC-DC power converters are devices that convert alternating current into direct current, while DC-DC power converters convert direct current of one voltage level into direct current of another voltage level.

The main advantages of 24 volt power supply include:

Strong stability: It can maintain the stability of the output voltage when the power grid fluctuates or the load changes.

High safety: 24V voltage is relatively low, and it is safer during use, suitable for some occasions that require direct contact with the power supply.

Strong versatility: As a standard voltage, 24V has strong versatility in industrial equipment and control systems.

2. Application areas of 24-volt power supply

24V power supply is widely used in various industrial and commercial fields, and specific applications include:

Industrial automation: In automated production lines, 24V power supply is used to drive various sensors, actuators and control devices to ensure the efficiency and reliability of production.

Communication equipment: Many components used in communication equipment require 24V power supply to ensure their stable operation, especially in equipment such as base stations and switches.

LED lighting: 24V power supply is widely used in lighting equipment such as LED light strips and LED panels. Since LED lamps require a stable low-voltage power supply to provide efficient lighting, 24V power supply becomes the first choice.

Power tools and portable devices: Some power tools and portable devices also use 24V power supply to provide sufficient power support.

2. Basic principles and advantages of switching power supply (SMPS)

1. Basic principles of switching mode power supply

Switching power supply (SMPS) is a power supply device that converts electrical energy into the required voltage and current through switching technology. Compared with traditional linear power supplies, switching power supplies process electrical energy through high-frequency switches and components such as inductors and capacitors to achieve efficient voltage conversion.

The working principle of switched mode power supply mainly includes the following steps:

Rectification and filtering: The input AC power is converted into DC power through a rectifier and filter.

Switch modulation: DC power is switched at high frequency through switching elements and modulated into high-frequency pulse current.

Energy conversion: The high-frequency pulse current is converted into the required voltage level through a transformer.

Output rectification and filtering: The converted current is rectified and filtered, and the output is a stable DC power.

2. Advantages of switching power supply

Compared with traditional linear power supply, switch mode power supply has the following advantages:

High efficiency: Due to the use of high-frequency switching technology, the efficiency of switching power supply is usually above 80%, which effectively reduces the waste of electric energy.

Small size and light weight: High-frequency operation greatly reduces the size of transformers and other components, making them suitable for portable devices and compact designs.

Stable output: The switching power supply can maintain a stable output voltage when the input voltage changes or the load fluctuates.

Wide input voltage range: Many switching power supplies can operate within a wide input voltage range and have strong adaptability.

3. Application of 24V switching power supply in modern industry

The 24V switching power supply combines the safety of the 24V power supply with the high efficiency of the switching power supply and is widely used in modern industry and technology. Its main applications include:

1. Industrial automation system

In industrial automation systems, 24V switching power supplies are used to power PLCs (programmable logic controllers), sensors, and actuators. These devices usually require the power supply to be efficient, stable, and anti-interference to ensure the normal operation of automated production lines.

2. Power and energy management

24V switching power supplies are widely used in the control and monitoring systems of power equipment, including smart meters, distribution cabinets, and uninterruptible power supplies (UPS). The high efficiency and stability of the switching power supply ensure the reliable operation of these systems under different working conditions.

3. Medical equipment

In medical equipment, 24V switching power supplies are used for power supply and control systems. These devices have extremely high requirements for the stability and safety of the power supply, and the advantages of switching power supplies make them the first choice. In medical imaging equipment, surgical equipment, and patient monitoring equipment, 24V switching power supplies provide reliable power support.

4. Transportation

Electronic equipment in transportation systems, such as railway signal systems, rail traffic control systems, and public transportation vehicles, all rely on the efficient power supply of 24V switching power supplies. These systems require the power supply to operate stably under vibration, shock, and extreme temperature conditions, and the high reliability of switching power supplies enables them to meet these requirements.

5. Data communication and network equipment

In data centers and network equipment, 24V switching power supplies are used for power supply and power management. The power supply requirements of these devices are mainly reflected in high efficiency, stability, and energy saving. The high conversion efficiency and low energy consumption characteristics of switching power supplies make them an ideal choice for the data communication industry.

IV. Design and development trend of 24V switching power supplies

1. High frequency and miniaturization

With the development of electronic technology, switching power supplies are developing in the direction of high frequency and miniaturization. High-frequency switching technology makes power conversion more efficient while reducing the size of transformers and other components. This trend enables 24V switching power supplies to be used in more compact designs and portable devices.

2. Intelligence and networking

Modern 24V switching power supplies are gradually integrated with intelligent technology, and the power status is monitored and managed through built-in microcontrollers. For example, remote monitoring and parameter adjustment of the power supply can be achieved through the network interface to improve the flexibility and efficiency of power management.

3. Environmental protection and energy saving

With the increase of environmental awareness, the design of switching power supplies pays more attention to energy efficiency and environmental protection. Use high-efficiency components and optimized circuit design to reduce energy consumption and electromagnetic interference to meet increasingly stringent environmental standards.

V. 24V switching power supply selection guide

When purchasing a 24V switching power supply, you need to consider the following factors:

1. Output power

Choose the appropriate output power according to the application requirements to ensure that the power supply can supply power stably and avoid overload or waste.

2. Efficiency and temperature rise

Choose a high-efficiency power supply to reduce energy consumption, and pay attention to the temperature rise of the power supply to ensure stable operation in a high temperature environment.

3. Protection function

A high-quality switching power supply should have multiple protection functions, such as overcurrent protection, overvoltage protection, and short-circuit protection, to improve the safety and reliability of the system.

4. Environmental adaptability

Select a power supply with good environmental adaptability according to the application environment, such as waterproof, dustproof, and shockproof performance to meet the needs of specific applications.

Conclusion

24V power supply（includes 24vdc power supply and 24vac power supply） and switching power supply are widely used in modern industrial and electronic equipment. Their high efficiency, stability, and safety make them the preferred power supply solution in many fields. With the continuous advancement of technology, the development of 24V switching power supply in high frequency, intelligence, and environmental protection will further promote its application and development in various fields.