Communication equipment

What are the requirements of communication equipment for communication special switching power supply?

Communication equipment and systems have high demands on the composition and performance of communication-specific switching power supplies. There are several key requirements that must be met to ensure optimum performance:

1. DC and/or AC power supply: Modern communication equipment relies on electronic and computer circuits that require several DC voltage supplies, with some equipment using internal power transformers (rectification, transformation, etc.). The external power supply arrangement can be split into DC or AC power supply networks. For large communication equipment and special-purpose devices like computers, DC power supply is typically used as it has the highest reliability. Meanwhile, small and versatile devices are powered by AC for better mobility.

2. Uninterrupted power supply (UPS): Continuous power supply is essential for communication equipment. Direct current power supply systems that use storage batteries to guarantee uninterrupted DC power supply are the most reliable solution. Nonetheless, AC uninterrupted power supply systems can also provide continuous power, albeit with lower reliability than their DC counterparts.

3. Accurate and stable voltage: Voltage accuracy and stability are critical for digital circuits. For general digital circuits, the voltage range is 5V±0.25V. For 12-bit A/D converters, the reference voltage must have an accuracy of 0.02% to ensure their resolution. Ensuring long-term float voltage for storage batteries that guarantee uninterrupted power supply should typically be (2.23V 0.02V)/each, or else their lifespan will be shortened.

4. Low noise voltage: Minimum interference is required to minimize noise in communication, such as little noise for voice communications, minimal stripe interference in image communications, and low error rates for code communications.

5. High efficiency: High efficiency offers energy-saving, reduced heat generation in power supply equipment, higher reliability, and smaller device size and weight. Many circuit technologies, such as soft switching and energy recovery, have been developed to optimize efficiency.

6. Low pollution: A green-power supply with high input power factor, low harmonic input current, and soft-start features to reduce impact current can limit environmental impact and imperceptibly influence the power grid supply quality.

7. Automatic protection: Protection measures are necessary in the event of abnormal conditions, such as excessive input or disconnect voltage or current, high temperature rise, and so on, to prevent malfunction and ensure that the equipment functions optimally.

8. Lightning and overvoltage protection: Lightning strikes and overvoltage during the operation of the power grid are significant environmental factors that can cause equipment damage. Therefore, equipment must have adequate lightning and overvoltage protection to ensure longevity.

9. Automatic monitoring and centralized control: Automatic monitoring and centralized control are crucial for saving labor and improving system reliability. Some telecommunication bureaus, stations, and urban areas have implemented centralized monitoring, with the aim of achieving nationwide centralized monitoring.

10. Other: Communication equipment must function normally within the specified range of ambient temperature and humidity, have low failure rates, and a long lifespan.

In conclusion, communication equipment and systems must meet several requirements to ensure optimal performance. These factors are critical for providing dependable, efficient, and sustainable communication solutions, ensuring that communication systems remain reliable, efficient, and functional.